December 31 in History

The Vandals were a group of Germanic peoples who were first mentioned in passing by a small number of Roman writers in the first and second centuries, but became more prominent starting in the late second century during the tumultuous Marcomannic Wars of the Romans against many of the Germanic peoples north of the Danube, when Hasdingi-led Vandals took the side of the Romans, in exchange for territory in or near Dacia. It was also under Hasdingi leadership that large numbers of Vandals later migrated and formed a powerful Vandal Kingdom that ruled Roman North Africa for several generations until it was conquered by the Eastern Roman Empire in 534.

The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the fall of the Western Roman Empire in the 5th century AD, it endured until the fall of Constantinople to the Ottoman Empire in 1453. The term 'Byzantine Empire' was coined only after its demise; its citizens used the term 'Roman Empire' and called themselves 'Romans'.

The Battle of Englefield was a West Saxon victory against a Danish Viking army on about 31 December 870 at Englefield, near Reading in Berkshire. It was the first of a series of battles that took place following an invasion of Wessex by the Danish army in December 870. By 870, the Vikings had conquered two of the four Anglo-Saxon kingdoms, Northumbria and East Anglia. At the end of 870 they launched an attempt to conquer Wessex and marched from East Anglia to Reading, arriving on about 28 December. Three days later they sent out a large party under two earls to forage and reconnoitre, and it was met at Englefield by an army of local levies under the command of Æthelwulf, Ealdorman of Berkshire. After one of the earls was killed and a large part of the Danish army was overthrown, the Viking force broke and ran. The victory was short-lived. Four days later, the main West Saxon army, led by King Ethelred and his brother, the future King Alfred the Great, attacked the main Danish encampment at Reading and were bloodily repulsed in the Battle of Reading. Among the many dead of both sides was Æthelwulf. Further battles followed, including the Battle of Ashdown, a West Saxon victory, and the Battle of Meretun, when the Danes prevailed. Soon after Easter, which fell on 15 April in that year, Æthelred died and was succeeded by Alfred. The Battle of Englefield can be dated because Bishop Heahmund of Sherborne died in the Battle of Meretun, and it is known that he died on 22 March 871. The Anglo-Saxon Chronicle records that the Battle of Basing was two months earlier, dating it to 22 January, Ashdown fourteen days before that on 8 January, Reading four days earlier on 4 January, Englefield another four days earlier on 31 December 870, and the arrival of the Vikings in Reading three days earlier on 28 December. However, as the two month interval between Meretun and Basing is probably not exact, the earlier dates are approximate.

The Holy Roman Emperor, originally and officially the Emperor of the Romans (Latin: Imperator Romanorum; German: Kaiser der Römer) during the Middle Ages, and also known as the Roman-German Emperor since the early modern period (Latin: Imperator Germanorum; German: Römisch-deutscher Kaiser), was the ruler and head of state of the Holy Roman Empire. The title was held in conjunction with the title of King of Italy (Rex Italiae) from the 8th to the 16th century, and, almost without interruption, with the title of King of Germany (Rex Teutonicorum, lit. 'King of the Teutons') throughout the 12th to 18th centuries. The Holy Roman Emperor title provided the highest prestige among medieval Catholic monarchs, because the empire was considered by the Catholic Church to be the only successor of the Roman Empire during the Middle Ages and the early modern period. Thus, in theory and diplomacy, the emperors were considered primus inter pares—first among equals—among other Catholic monarchs across Europe. From an autocracy in Carolingian times (AD 800–924), the title by the 13th century evolved into an elective monarchy, with the emperor chosen by the prince-electors. Various royal houses of Europe, at different times, became de facto hereditary holders of the title, notably the Ottonians (962–1024), the Salians (1027–1125) and the Hohenstaufen (1138–1254). Following the late medieval crisis of government, the Habsburgs kept possession of the title (with only one interruption) from 1452 to 1806. The final emperors were from the House of Habsburg-Lorraine, from 1765 to 1806. The Holy Roman Empire was dissolved by Francis II, after a devastating defeat by Napoleon at the Battle of Austerlitz. The emperor was widely perceived to rule by divine right, though he often contradicted or rivaled the Pope, most notably during the Investiture controversy. The Holy Roman Empire never had an empress regnant, though women such as Theophanu and Maria Theresa exerted strong influence. Throughout its history, the position was viewed as a defender of the Catholic faith. Until Maximilian I in 1508, the Emperor-elect (Imperator electus) was required to be crowned by the pope before assuming the imperial title. Charles V was the last to be crowned by the Pope in 1530. There were short periods in history when the electoral college was dominated by Protestants, and the electors usually voted in their own political interest. However, even after the Reformation, the elected emperor was always a Catholic.

The Lý dynasty, officially Đại Cồ Việt from 1009 to 1054 and Đại Việt from 1054 to 1225, was a Vietnamese dynasty that existed from 1009 to 1225. It was established by Lý Công Uẩn when he overthrew the Anterior Lê dynasty. The dynasty ended when empress regnant Lý Chiêu Hoàng was pressured to abdicate the throne in favor of her husband, Trần Cảnh in 1225, the dynasty lasted for 216 years. During Lý Thánh Tông's reign, the official name of the state was changed from Đại Cồ Việt to Đại Việt, a name that would remain Vietnam's official name until the onset of the 19th century.

James I the Conqueror (Catalan: Jaume I or Jaume el Conqueridor; Aragonese: Chaime I o Conqueridor; 2 February 1208 – 27 July 1276) was the 11th King of Aragon, 38th Count of Barcelona, and Lord of Montpellier from 1213 to 1276; King of Majorca from 1231 to 1276; and King of Valencia from 1238 to 1276. His long reign of 62 years is not only the longest of any Iberian monarch, but one of the longest monarchical reigns in history, ahead of Hirohito of Japan but remaining behind Elizabeth II of Britain, Queen Victoria of Britain, Ferdinand I of the Two Sicilies, Bhumibol Adulyadej of Thailand, and King Louis XIV of France. King James I saw the expansion of the Crown of Aragon in three directions: Languedoc to the north, the Balearic Islands to the southeast, and Valencia to the south. By a treaty with Louis IX of France, he achieved the renunciation of any possible claim of French suzerainty over the County of Barcelona and the other Catalan counties, while he renounced northward expansion and taking back the once Catalan territories in Occitania and vassal counties loyal to the County of Barcelona, lands that were lost by his father Peter II of Aragon in the Battle of Muret during the Albigensian Crusade and annexed by the Kingdom of France, and then decided to turn south. His great part in the Reconquista was similar in Mediterranean Spain to that of his contemporary Ferdinand III of Castile in Andalusia. One of the main reasons for this formal renunciation of most of the once Catalan territories in Languedoc and Occitania, and any expansion into them, is that he was raised by the Knights Templar Crusaders, who had defeated his father, who was fighting for the Pope alongside the French. It was thus effectively forbidden for him to try to maintain the traditional influence of the Count of Barcelona that previously existed in Occitania and Languedoc. As a legislator and organiser, he occupies a high place among the European kings. King James I compiled the Llibre del Consolat de Mar, which governed maritime trade and helped establish Aragonese supremacy in the western Mediterranean. He was an important figure in the development of the Catalan language, sponsoring Catalan literature and writing a quasi-autobiographical chronicle of his reign: the Llibre dels fets.

The First Battle of Cannanore was a naval engagement between the Third Portuguese Armada under João da Nova and the naval forces of Calicut, which had been assembled by the Zamorin against the Portuguese in order to prevent their return to Portugal. The battle was fought over two days, between 31 December 1501 and 2 January 1502, and was the first major Portuguese naval engagement in the Indian Ocean. Although badly outnumbered, da Nova's bold tactics, better trained and prepared men, and superior weaponry proved decisive for the Portuguese to defeat the blocking force of Calicut, break out of Cannanore, and emerge victorious from the battle. The battle is also historically notable for being one of the earliest recorded deliberate uses of a naval line of battle, and for resolving the battle by cannon alone. These tactics would become increasingly prevalent as navies evolved and began to see ships less as carriers of armed men, and more as floating artillery. In that respect, this has been called the first 'modern' naval battle (at least for one side). After it, João da Nova returned to Portugal.

The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed for Indian Ocean trade, initially with the East Indies (which included the Indian subcontinent and Southeast Asia), and later with East Asia. The company gained control of large parts of the Indian subcontinent and Hong Kong. At its peak, the company was the largest corporation in the world by various measures and had its own armed forces in the form of the company's three presidency armies, totalling about 260,000 soldiers, twice the size of the British Army at certain times. Originally chartered as the "Governor and Company of Merchants of London Trading into the East-Indies", the company rose to account for half of the world's trade during the mid-1700s and early 1800s, particularly in basic commodities including cotton, silk, indigo dye, sugar, salt, spices, saltpetre, tea, gemstones, and later opium. The company also initiated the beginnings of the British Raj in the Indian subcontinent. The company eventually came to rule large areas of the Indian subcontinent, exercising military power and assuming administrative functions. Under this government-like rule, the company used torture to extract taxes, reduced much of the population to poverty and enacted policies that resulted in the Great Bengal famine of 1770, during which 10 million people starved to death. Company-ruled areas in the region gradually expanded after the Battle of Plassey in 1757, and by 1858 most of modern India, Pakistan and Bangladesh, along with Lower Burma, was either ruled by the company or princely states closely tied to the company by treaties. Following the Indian Rebellion of 1857, the Government of India Act 1858 led to the British Crown assuming direct control of present-day Bangladesh, India, Pakistan, and Myanmar in the form of the new British Raj. The company subsequently experienced recurring problems with its finances, despite frequent government intervention. The company was dissolved in 1874 under the terms of the East India Stock Dividend Redemption Act enacted one year earlier, as the Government of India Act had by then rendered it vestigial, powerless, and obsolete. The official government machinery of the British Empire had assumed its governmental functions and absorbed its armies.

James II and VII was King of England and Ireland as James II and King of Scotland as James VII from February 1685 until he was deposed in the 1688 Glorious Revolution. The last Catholic monarch of England, Scotland, and Ireland, his reign was marked by conflicts over religion, absolutism and the divine right of kings; his deposition ended a century of political and civil strife by confirming the primacy of the English Parliament over the Crown.

By the late 1660s, the English rulers had considered invading Spanish-ruled Chile for several years. In 1655, Simón de Casseres proposed to Oliver Cromwell a plan to take over Chile with only four ships and a thousand men.

The Huguenots are a religious group of French Protestants who held to the Reformed (Calvinist) tradition of Protestantism. The term, which may be derived from the name of burgomaster Besançon Hugues, who defended Geneva from Catholic Savoy but then let it fall to Protestantism, was in common use by around 1550. Huguenot was frequently used in reference to those of the Reformed Church of France from the time of the Protestant Reformation. By contrast, the Protestant populations of eastern France, in Alsace, Moselle, and Montbéliard, were mainly Lutherans.

Elizabeth or Elizaveta Petrovna (Russian: Елизаве́та Петро́вна; 29 December [O.S. 18 December] 1709 – 5 January 1762 [O.S. 25 December 1761]) was Empress of Russia from 1741 until her death in 1762. She remains one of the most popular Russian monarchs because of her decision not to execute a single person during her reign, her numerous construction projects, and her strong opposition to Prussian policies. She was the last person on the agnatic line of the Romanovs as her nephew ascended, thus creating the house of Holstein-Gottorp-Romanov. The second-eldest daughter of Tsar Peter the Great (r. 1682–1725), Elizabeth lived through the confused successions of her father's descendants following her half-brother Alexei's death in 1718. The throne first passed to her mother Catherine I of Russia (r. 1725–1727), then to her nephew Peter II, who died in 1730 and was succeeded by Elizabeth's first cousin Anna (r. 1730–1740). After the brief rule of Anna's infant great-nephew, Ivan VI, Elizabeth seized the throne with the military's support and declared her own nephew, the future Peter III, her heir. During her reign Elizabeth continued the policies of her father and brought about a remarkable Age of Enlightenment in Russia. Her domestic policies allowed the nobles to gain dominance in local government while shortening their terms of service to the state. She encouraged Mikhail Lomonosov's foundation of the University of Moscow, the highest-ranking Russian educational institution. Her court became one of the most splendid in all Europe, especially regarding architecture: she modernised Russia's roads, encouraged Ivan Shuvalov's foundation of the Imperial Academy of Arts, and financed grandiose Baroque projects of her favourite architect, Bartolomeo Rastrelli, particularly in Peterhof Palace. The Winter Palace and the Smolny Cathedral in Saint Petersburg are among the chief monuments of her reign. Elizabeth led the Russian Empire during the two major European conflicts of her time: the War of Austrian Succession (1740–1748) and the Seven Years' War (1756–1763). She and diplomat Aleksey Bestuzhev-Ryumin solved the first event by forming an alliance with Austria and France, but indirectly caused the second. Russian troops enjoyed several victories against Prussia and briefly occupied Berlin, but when Frederick the Great was finally considering surrender in January 1762, the Russian Empress died. She was the last agnatic member of the House of Romanov to reign over the Russian Empire.

Arthur Guinness (c. 24 September 1725 – 23 January 1803) was an Irish brewer, entrepreneur, and philanthropist. The inventor of Guinness stout, he founded the Guinness Brewery at St. James's Gate in 1759. Guinness was born in Clonoughlis, Celbridge, County Kildare, in 1725. His father was employed by Arthur Price, a bishop of the Church of Ireland. Guinness himself was later employed by Price, and upon his death in 1752, both he and his father were bequeathed funds from Price's will. Guinness then worked at his stepmother's public house before founding a brewery in Leixlip. In 1759, during a financial crisis that created an abundance of affordable property, Guinness moved to Dublin and purchased an abandoned brewery from the Rainsford family. It was originally an ale brewery, but Guinness began producing porter in 1778, and by 1799, production of ale ceased with the popularity of his darker beer. Outside of his brewery, Guinness was socially and politically active. A devout Protestant, he founded the first Sunday school in Dublin in 1786 and frequently argued for his fellow gentry to set a strong moral example. He was largely supportive of Catholic rights in Ireland but opposed the Irish Rebellion of 1798. As a member of the Dublin Corporation of Brewers, Guinness was also instrumental in petitioning the Irish House of Commons to change the tax code surrounding the importation of beer. Guinness and his wife had ten children together, and upon Guinness's death in 1803, his son Arthur Guinness II inherited the brewery and all operations.

The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence or simply the American Revolution, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and, commanded by George Washington, defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war, but Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war. In 1783, in the Treaty of Paris, the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation. In 1763, after the British Empire gained dominance in North America following its victory over the French in the Seven Years' War, tensions and disputes began escalating between the British and the Thirteen Colonies, especially following passage of the Stamp and Townshend Acts. The British Army responded by seeking to occupy Boston militarily, leading to the Boston Massacre on March 5, 1770. In mid-1774, with tensions escalating even further between the British Army and the colonies, the British Parliament imposed the Intolerable Acts, an attempt to disarm Americans, leading to the Battles of Lexington and Concord in April 1775, the first battles of the Revolutionary War. In June 1775, the Second Continental Congress voted to incorporate colonial-based Patriot militias into a central military, the Continental Army, and unanimously appointed Washington its commander-in-chief. Two months later, in August 1775, George III declared the colonies to be in a state of rebellion. In July 1776, the Second Continental Congress formalized the war, passing the Lee Resolution on July 2, and, two days later, unanimously adopting the Declaration of Independence, on July 4. In March 1776, in an early win for the newly-formed Continental Army under Washington's command, following a successful siege of Boston, the Continental Army successfully drove the British Army out of Boston. British commander in chief William Howe responded by launching the New York and New Jersey campaign, which resulted in Howe's capture of New York City in November. Washington responded by clandestinely crossing the Delaware River and winning small but significant victories at Trenton and Princeton. In the summer of 1777, as Howe was poised to capture Philadelphia, the Continental Congress fled to Baltimore. In October 1777, a separate northern British force under the command of John Burgoyne was forced to surrender at Saratoga in an American victory that proved crucial in convincing France and Spain that an independent United States was a viable possibility. France signed a commercial agreement with the revolutionaries, followed by a Treaty of Alliance in February 1778. In 1779, the Sullivan Expedition undertook a scorched earth campaign against British-allied factions of the Haudenosaunee Confederacy (also Iroquois). Native American raids on the American frontier, however, continued to be a problem. Also, in 1779, Spain allied with France against Great Britain in the Treaty of Aranjuez, though Spain did not formally ally with the Americans. Howe's replacement Henry Clinton intended to take the war against the Americans into the Southern Colonies. Despite some initial success, British General Cornwallis was besieged by a Franco-American army in Yorktown, Virginia, in September and October 1781. The French navy cut off Cornwallis's escape and he was forced to surrender in October. The British wars with France and Spain continued for another two years, but fighting largely ceased in North America. In the Treaty of Paris, signed on September 3, 1783, Great Britain acknowledged the sovereignty and independence of the United States, bringing the American Revolutionary War to an end. The Treaties of Versailles resolved Great Britain's conflicts with France and Spain, and forced Great Britain to cede Tobago, Senegal, and small territories in India to France, and Menorca, West Florida, and East Florida to Spain.

Efimeris (Greek: Εφημερίς) was a Greek-language newspaper published in Vienna from 1790 to 1797. It is the oldest Greek newspaper of which issues have survived till today.

Baltimore, also known as Baltimore City, is the most populous city in the U.S. state of Maryland. It is the 30th-most populous U.S. city with a population of 585,708 at the 2020 census and estimated at 569,997 in 2025, while the Baltimore metropolitan area at 2.86 million residents is the 22nd-largest metropolitan area in the nation. The city is also part of the Washington–Baltimore combined statistical area, which had a population of 9.97 million in 2020. Baltimore was designated as an independent city by the Constitution of Maryland in 1851. Though not located under the jurisdiction of any county in the state, it forms part of the Central Maryland region together with the surrounding county that shares its name.

Gramercy Park () is the name of both a small, fenced-in private park, and the surrounding neighborhood (which is also referred to as Gramercy), in Manhattan in New York City. The approximately 2-acre (0.8 ha) park, located in the Gramercy Park Historic District, is one of two private parks in New York City – the other is Sunnyside Gardens Park in Queens – as well as one of only three in the state; only people residing around the park who pay an annual fee have a key, and the public is not generally allowed in. The sidewalks of the streets around the park are a popular jogging, strolling, and dog-walking route. The neighborhood is mostly located within Manhattan Community District 6, with a small portion in Community District 5. It is generally perceived to be quiet and safe. The neighborhood, associated historic district, and park have generally received positive reviews. Calling it "a Victorian gentleman who has refused to die", Charlotte Devree in The New York Times said in 1957 that "There is nothing else quite like Gramercy Park in the country." When the New York City Landmarks Preservation Commission created the Gramercy Park Historic District in 1966, they quoted from John B. Pine's 1921 book, The Story of Gramercy Park: The laying out of Gramercy Park represents one of the earliest attempts in this country at 'City Planning'. ... As a park given to the prospective owners of the land surrounding it and held in trust for those who made their homes around it, Gramercy Park is unique in this City, and perhaps in this country, and represents the only neighborhood, with possibly one exception, which has remained comparatively unchanged for eighty years – the Park is one of the City's Landmarks.

The Philippines, officially the Republic of the Philippines, is an archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of about 7,641 islands, with a total area of about 300,000 square kilometers. The islands are broadly categorized in three main geographical divisions. From north to south, the divisions are: Luzon, Visayas, and Mindanao. With a population of over 114 million, it is the world's thirteenth-most-populous country. The Philippines is bounded by the South China Sea to the west, the Philippine Sea to the east, and the Celebes Sea to the south. It shares maritime borders with Taiwan to the north, Japan to the northeast, Palau to southeast, Indonesia to the south, Malaysia to the southwest, Vietnam to the west, and China to the northwest. It has diverse ethnicities and a rich culture. Manila is the country's capital, and its most populated city is Quezon City. Both are within Metro Manila. Negritos, the archipelago's earliest inhabitants, were followed by waves of Austronesian peoples. The adoption of animism, Hinduism with Buddhist influence, and Islam established island-kingdoms. Extensive overseas trade with neighbors such as the late Tang or Song empire brought Chinese people to the archipelago as well, who would also gradually settle in and intermix over the centuries. The arrival of the explorer Ferdinand Magellan marked the beginning of Spanish colonization. In 1543, Spanish explorer Ruy López de Villalobos named the archipelago las Islas Filipinas in honor of King Philip II. Catholicism became the dominant religion, and Manila became the western hub of trans-Pacific trade. Hispanic immigrants from Latin America and Iberia would also selectively colonize. The Philippine Revolution began in 1896, and became entwined with the 1898 Spanish–American War. Spain ceded the territory to the United States, and Filipino revolutionaries declared the First Philippine Republic. The ensuing Philippine–American War ended with the United States controlling the territory until the Japanese invasion of the islands during World War II. After the United States retook the Philippines from the Japanese, the Philippines became independent in 1946. Since then, the country notably experienced a period of martial law from 1972 to 1981 under the dictatorship of Ferdinand Marcos and his subsequent overthrow by the People Power Revolution in 1986, returning to democracy. The Philippines is an emerging market and a developing and newly industrialized country, whose economy is transitioning from being agricultural to service- and manufacturing-centered. It has a variety of natural resources and a globally-significant level of biodiversity. The country is also part of multiple international organizations and forums, mainly in the Asia-Pacific region. Despite its fast economic growth, it continues to struggle with inequality, widespread corruption, and vulnerability to natural disasters due to its location both within the Pacific Ring of Fire and near the equator, making it prone to earthquakes, monsoon rains, and typhoons, to which the Philippines has built a resilience.

Iguanodon, named in 1825, is a genus of iguanodontian dinosaur. While many species found worldwide have been classified in the genus Iguanodon, dating from the Late Jurassic to Early Cretaceous, taxonomic revision in the early 21st century has defined Iguanodon to be based on at least one well-substantiated species: Iguanodon bernissartensis, which lived during the Barremian to early Aptian ages of the Early Cretaceous in Belgium, Germany, England, and Spain, between about 126 and 122 million years ago. Iguanodon was a large, bulky herbivore, measuring up to 9–11 metres (30–36 ft) in length and 4.5 metric tons in body mass. Distinctive features include large thumb spikes, which were possibly used for defense against predators, combined with long prehensile fifth fingers able to forage for food.

Victoria was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death in 1901. Her reign of 63 years and 216 days, which was longer than those of any of her predecessors, constituted the Victorian era, a period of industrial, political, scientific, and military change within the United Kingdom marked by a great expansion of the British Empire. In 1876, the British parliament voted to grant her the additional title of Empress of India.

The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States between the Union ("the North") and the Confederacy ("the South"), which was formed in 1861 by states that had seceded from the Union to preserve slavery in the United States. The South saw slavery as threatened because of the election of Abraham Lincoln and the growing abolitionist movement in the North. The war ended with Union victory, the dissolution of the Confederacy and the abolition of slavery, freeing four million African Americans. Decades of controversy over slavery came to a head when Abraham Lincoln, a Republican who opposed slavery's expansion, won the 1860 presidential election. Seven slave states in the South responded to Lincoln's victory by seceding from the United States and forming the Confederate States of America. The Confederacy seized US forts and other federal assets in the South. The war began on April 12, 1861, when the Confederacy bombarded Fort Sumter in South Carolina. A wave of enthusiasm for war swept over the North and South, as military recruitment soared. Four more Southern states seceded after the war began and, led by its president, Jefferson Davis, the Confederacy comprised eleven states, containing a third of the US population. Four years of intense combat, mostly in the South, ensued. During 1861–1862 in the western theater, the Union made permanent gains, though in the eastern theater the conflict was inconclusive. The abolition of slavery became a Union war goal on January 1, 1863, when Lincoln issued the Emancipation Proclamation, which declared all slaves in rebel states to be free, applying to more than 3.5 million of the 4 million enslaved people in the country. To the west, the Union first destroyed the Confederacy's river navy by the summer of 1862, then much of its western armies, and seized New Orleans. The successful 1863 Union siege of Vicksburg split the Confederacy in two at the Mississippi River, while Confederate general Robert E. Lee's incursion north failed at the Battle of Gettysburg. General Ulysses S. Grant's western successes led Lincoln to promote him to command of all Union armies in 1864. Inflicting an ever-tightening naval blockade of Confederate ports, the Union marshaled resources and manpower to attack the Confederacy from all directions. This led to the fall of Atlanta in 1864 to Union general William Tecumseh Sherman, followed by his March to the Sea, which culminated in his taking Savannah. The last significant battles raged around the ten-month siege of Petersburg, gateway to the Confederate capital of Richmond. The Confederates abandoned Richmond, and on April 9, 1865, Lee surrendered to Grant following the Battle of Appomattox Court House, setting in motion the end of the war. Lincoln lived to see this victory but was shot by an assassin on April 14, dying the next day. By the end of the war, much of the South's infrastructure had been destroyed. The Confederacy collapsed, the Thirteenth Amendment abolished slavery, and four million enslaved black people were freed. The war-torn nation then entered the Reconstruction era in an attempt to rebuild the country, bring the former Confederate states back into the United States, and grant civil rights to freed slaves. The war is one of the most extensively studied and written about episodes in the history of the United States. It remains the subject of cultural and historiographical debate. Of continuing interest is the myth of the Lost Cause of the Confederacy. The war was among the first to use industrial warfare. Railroads, the electrical telegraph, steamships, the ironclad warship, and mass-produced weapons were widely used. The war left an estimated 700,000 soldiers dead, along with an undetermined number of civilian deaths, making it the deadliest in American history. The technology and brutality of the Civil War foreshadowed the coming world wars.

Abraham Lincoln (February 12, 1809 – April 15, 1865) was the 16th president of the United States, serving from 1861 until his assassination in 1865. He led the United States through the American Civil War, defeating the Confederacy and playing a major role in the abolition of slavery. Born in a one-room log cabin in Kentucky, Lincoln was raised on the frontier. He was self-educated and became a lawyer, Illinois state legislator, and U.S. representative. Angered by the Kansas–Nebraska Act of 1854, which opened the territories to slavery, he became a leader of the new Republican Party. He reached a national audience in the 1858 Senate campaign debates against Stephen A. Douglas. Lincoln won the 1860 presidential election, becoming the first Republican president. His victory prompted a majority of the slave states to begin seceding and form the Confederate States. A month after Lincoln assumed the presidency, Confederate forces attacked Fort Sumter, starting the Civil War. As a moderate Republican, Lincoln had to navigate conflicting political opinions from contentious factions during the war effort. He closely supervised the Union's strategy and tactics, including the selection of generals and the implementation of a naval blockade of Southern ports. He suspended the writ of habeas corpus in April 1861, an action that Chief Justice Roger Taney found in Ex parte Merryman that only Congress could do, and he averted war with Britain by defusing the Trent Affair. On January 1, 1863, he issued the Emancipation Proclamation, which declared the slaves in the states "in rebellion" to be free. On November 19, 1863, he delivered the Gettysburg Address, which became one of the most famous speeches in American history. He promoted the Thirteenth Amendment to the U.S. Constitution, which, in 1865, abolished chattel slavery. Following his re-election in 1864, he sought to heal the war-torn nation through Reconstruction. On April 14, 1865, five days after the Confederate surrender at Appomattox, Lincoln was fatally shot by John Wilkes Booth at Ford's Theatre in Washington, D.C., becoming the first U.S. president to be assassinated. Lincoln is remembered as a martyr and a national hero for his wartime leadership and for his efforts to preserve the Union and abolish slavery. He is consistently ranked in both popular and scholarly polls as among the greatest presidents in American history.

Carl Friedrich Benz was a German engine designer and automotive engineer. His Benz Patent-Motorwagen from 1885 is considered the first practical, modern automobile and the first car to be put into series production. He received a patent for the motorcar in 1886, the same year he first publicly drove the Benz Patent-Motorwagen.

Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman known for his work on the incandescent light bulb, the phonograph, electric power distribution and early motion pictures. The merger of the Edison General Electric Company and the competitor Thomson-Houston Electric Company resulted in the formation of General Electric. Edison registered 1,093 patents in the United States. Edison was born in Milan, Ohio, but grew up in Michigan with little formal schooling. He became deaf as a child and learned through books and tinkering. Edison began working at a young age; as a railroad telegrapher, he spent much of his time inventing improvements to telegraph systems. By the age of 22, he had sold a few of his early inventions and moved to New York City to focus on engineering. He had three children with his first wife, Mary, but Edison was neglectful. She died at 29 years old. Edison had troubled relationships with his children for the rest of his life. With the help of friends, the inventor attracted investment and grew his company. By the age of 29, he owned a telegraph recorder factory in Newark with over one hundred employees. Edison expanded, developing Menlo Park, now considered the first industrial research laboratory. Edison, known as "The Wizard of Menlo Park", drove his staff extremely hard and constantly worked himself and his associates to exhaustion. The inventor also drove up investment and publicity. He rose to international fame with the invention of the phonograph which took many years to turn into a commercial success. He later built a larger research lab in West Orange, New Jersey. In 1878, Edison began working on an electrical lighting system which he hoped would replace the common gas lamp. Going from electrical light bulb to the modern electric grid took decades of invention, investment, and influence. Edison and his colleagues had the opportunity to get enormously wealthy as they designed and built a nation of light bulbs, generators, and electric distribution systems. Competition with Westinghouse's AC system forced Edison to yield and resulted in the creation of General Electric. Edison simultaneously created a mining company, which was never profitable, and he nearly went bankrupt. As his role in the illumination business declined, he established a cement company and began work on a motion picture camera. The motion picture camera went from an invention to the first movie production studio. He traveled around the United States and Europe promoting his many innovations, during which he met Mina, his second wife. They had three children together, and Edison was again neglectful. During their adulthood, he began to take more interest in his sons and they eventually worked for him. Charles Edison took over his father's business when he died. In addition to acute health issues from handling toxic and radioactive chemicals during his various experiments, Thomas faced a lifelong battle against diabetes. He worked vigorously until his death. Following the success of the illumination business, he ran several companies which produced batteries, movies, musical records, and phenol. His last obsession was the search for domestic rubber production.

Mozaffar ad-Din Shah Qajar (Persian: مظفرالدین شاه قاجار, romanized: Mozaffareddin Šāh-e Qājār; 23 March 1853 – 8 January 1907) was the fifth Qajar shah of Iran, reigning from 1896 until his death in 1907. He is often credited with the creation of the Persian Constitution of 1906, which he approved of in one of his final acts as shah.

The Times Square Ball is a time ball located in New York City's Times Square. Located on the roof of One Times Square, the ball is a prominent part of a New Year's Eve celebration in Times Square commonly referred to as the ball drop, where the ball descends down a specially designed flagpole, beginning at 11:59:00 p.m. ET, and resting at 12:00:00 a.m. to signal the start of the new year. The event was first organized by then-New York Times owner Adolph Ochs, expanding upon New Year's fireworks displays he held at the building since 1904 to promote its status as the Times' headquarters. The ball itself was designed by sign company Artkraft Strauss, and inspired by the time ball at the Western Union Telegraph Building. First held on December 31, 1907, to welcome 1908, the ball drop has been held annually since, except in 1942 and 1943 in observance of wartime blackouts during World War II. The ball has been updated six times to reflect improvements in lighting technology: the original ball was 5 feet (1.5 m) in diameter, constructed from wood and iron, and illuminated with 100 incandescent light bulbs. By contrast, the sixth iteration of the ball contained over 32,000 LEDs, and the seventh iteration which debuted for 2025–26 is 12.5 feet (3.8 m) in diameter. Since 1999–2000, the ball has typically featured an outer surface consisting of crystal panels manufactured by Waterford Crystal, which contain inscriptions and designs representing a yearly theme; the current ball contains over 5,000 circular panels of varying sizes. The ball itself has remained atop One Times Square nearly year-round since 2009. As part of a renovation of One Times Square, the ball became accessible to the public in November 2025 as part of a new observation deck attraction, with visitors also able to purchase outgoing crystals from the ball as keepsakes. The prevalence of the event has inspired similar "drops" at other local New Year's Eve events across the country; while some use balls, some instead drop objects that represent local culture or history. The ball has occasionally been lowered outside of midnight ET on New Year's Eve, including for promotional purposes (including a reported use in 1983 to inaugurate a new Times Square sign, and Toshiba briefly sponsoring a drop for midnight in Japan on the morning of December 31), and the current ball being lowered multiple times per-day for public viewings on One Times Square's observation deck. On July 3 and 4, 2026, the ball was lowered eight times for midnight on Independence Day in each U.S. time zone, as part of a commemoration of the United States Semiquincentennial.

USS Essex (CV/CVA/CVS-9) was an aircraft carrier and the lead ship of the 24-ship Essex class built for the United States Navy during World War II. She was the fourth US Navy ship to bear the name. Commissioned in December 1942, Essex participated in several campaigns in the Pacific Theater of Operations, earning the Presidential Unit Citation and 13 battle stars. Decommissioned shortly after the war, she was modernized and recommissioned in the early 1950s as an attack carrier (CVA), eventually becoming an antisubmarine aircraft carrier (CVS). In her second career, she served mainly in the Atlantic, playing a role in the Cuban Missile Crisis. She also participated in the Korean War, earning four battle stars and the Navy Unit Commendation. She was the primary recovery carrier for the Apollo 7 space mission. She was decommissioned for the last time in 1969 and sold by the Defense Reutilization and Marketing Service for scrap on 1 June 1973.

World War II, or the Second World War, was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many engaging in total war on an unprecedented scale. World War II was the deadliest conflict in history, causing the deaths of 60 to 75 million people, a majority of whom were civilians. Millions died as a result of massacres, starvation, disease, and genocides including the Holocaust. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

Operation Northwind (German: Unternehmen Nordwind) was the last major German offensive of World War II on the Western Front. Northwind was launched to support the German Ardennes offensive campaign in the Battle of the Bulge, which by late December 1944 had decisively turned against the German forces. It began on 31 December 1944 in Rhineland-Palatinate, Alsace and Lorraine in southwestern Germany and northeastern France, and ended on 25 January 1945. The German offensive was an operational failure, with its main objectives not achieved, clearing the way for the Allied invasion of Germany.

Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd president of the United States, serving from 1945 to 1953. As the 34th vice president in 1945, he assumed the presidency upon the death of Franklin D. Roosevelt in April. Truman set up the Marshall Plan to rebuild the badly damaged economy of Western Europe. He established the Truman Doctrine and supported the founding of NATO to contain the expansion of Soviet communism. A member of the Democratic Party, he proposed numerous New Deal coalition liberal domestic reforms, but few were enacted by the conservative coalition that dominated the United States Congress. Born in rural Missouri, Truman was raised in Independence, Missouri, and during World War I, he fought in France as a captain in the Field Artillery. Returning home, he opened a haberdashery in Kansas City, Missouri, and was elected as a judge of Jackson County in 1922. Truman was elected to the U.S. Senate for Missouri in 1934. Between 1940 and 1944, he gained national prominence as the chairman of the Truman Committee, which aimed to reduce waste and inefficiency in wartime contracts. Truman was elected vice president in the 1944 presidential election and became president upon Roosevelt's death in April 1945. Only then was he told about the ongoing Manhattan Project and the atomic bomb. Truman authorized the first and only use of nuclear weapons in war against the Japanese cities of Hiroshima and Nagasaki. Truman's administration engaged in an internationalist foreign policy by working closely with Britain. Truman staunchly denounced isolationism. He energized the New Deal coalition during the 1948 presidential election, despite some Democrats splitting off into the Dixiecrats, and defeated both the Republican Party nominee Thomas E. Dewey and Dixiecrat Strom Thurmond. Truman presided over the onset of the Cold War in 1947. He oversaw the Berlin Airlift and the Marshall Plan in 1948. With America's involvement in the Korean War (1950–1953), South Korea repelled the invasion by North Korea. Domestically, the postwar economic challenges such as strikes and inflation created a mixed reaction over the effectiveness of his administration. In 1948, he proposed that Congress should pass comprehensive civil rights legislation. Congress refused, so Truman issued Executive Order 9980 and Executive Order 9981, which prohibited discrimination in agencies of the federal government and desegregated the United States Armed Forces. Investigations revealed corruption in parts of the Truman administration, and this became a major campaign issue in the 1952 presidential election, although they did not implicate Truman himself. He was eligible for reelection in 1952 but he chose not to run due to poor polling. Subsequently, Truman went into a retirement marked by the founding of his presidential library and the publication of his memoirs. It was long believed that Truman's retirement years were financially difficult, resulting in Congress establishing a pension for former presidents. However, evidence eventually emerged that he amassed considerable wealth, some of it during his presidency. When Truman left office, his administration was heavily criticized. Despite this controversy, historians consistently rank Truman in the first quartile of U.S. presidents. In addition, critical reassessments of his presidency have improved his reputation among historians and the general population.

The Cold War was a period of international geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc. It began in the aftermath of the Second World War and ended with the dissolution of the Soviet Union in 1991. The term cold war is used because there was no direct fighting between the two superpowers, though each supported opposing sides in regional conflicts known as proxy wars. In addition to the struggle for ideological and economic influence and an arms race in both conventional and nuclear weapons, the Cold War was expressed through technological rivalries such as the Space Race, espionage, propaganda campaigns, embargoes, and sports diplomacy.

General Motors Company (GM) is an American multinational automotive manufacturing company headquartered in Detroit, Michigan, United States. The company is most known for owning and manufacturing four automobile brands: Chevrolet, Buick, GMC, and Cadillac, each a separate division of GM. By total sales, it has continuously been the largest automaker in the United States, and was the largest in the world for 77 years before losing the title to Toyota in 2008.

Televiziunea Română, more commonly referred to as TVR, is the short name for Societatea Română de Televiziune, the Romanian public television. It operates nine channels: TVR 1, TVR 2, TVR 3, TVR Cultural, TVR Folclor, TVR Info, TVRi, TVR Moldova and TVR Sport along with six regional studios in Bucharest, Cluj-Napoca, Iași, Timișoara, Craiova, and Târgu Mureș.

Raidió Teilifís Éireann is an Irish public service broadcaster. It produces and broadcasts programmes on television, radio and online. The radio service began on 1 January 1926, and regular television broadcasts began on 31 December 1961, making RTÉ one of the oldest continuously operating public service broadcasters in the world. It is headquartered in the Donnybrook district of Dublin, with additional news offices and studios across Ireland.

The Federation of Rhodesia and Nyasaland, also known as the Central African Federation (CAF), was a colonial federation that consisted of three southern African territories: the self-governing British colony of Southern Rhodesia and the British protectorates of Northern Rhodesia and Nyasaland. It existed between 1953 and 1963. Rhodesia and Nyasaland bordered Angola, Bechuanaland, Congo-Léopoldville, Mozambique, South Africa, South West Africa and Tanganyika.

Jean-Bédel Bokassa was a Central African politician and military officer who served as the second president of the Central African Republic (CAR) and Emperor of the Central African Empire (CAE) as Bokassa I, ruling these two states from 1966 to 1979.

The Tupolev Tu-144 is a Soviet supersonic passenger airliner designed by Tupolev that operated commercially from 1975 to 1983, including 1977–1978 passenger service.

On 31 December 1968 a Vickers Viscount aircraft departed from Perth, Western Australia for a flight of 724 nautical miles (1341 km) to Port Hedland. The aircraft crashed 28 nautical miles (52 km) short of its destination with the loss of all twenty-six people on board. More than half of the right wing, from outboard of the inner engine to the wingtip, including the outer engine and its propeller, broke away from the rest of the aircraft in flight and struck the ground a significant distance from the main wreckage. Investigation by the Australian Department of Civil Aviation and British Aircraft Corporation concluded that a mysterious action during maintenance led to extensive fatigue cracking in the right wing spar. This accident remains the third worst in Australia's civil aviation history.

The 1981 Ghanaian coup d'état was a successful government takeover in Ghana led by Air Force Flight Lieutenant Jerry Rawlings, overthrowing the administration of President Hilla Limann and establishing the Provisional National Defence Council (PNDC), with Jerry Rawlings assuming leadership of the country. The second of two coups to be orchestrated by Jerry Rawlings, the 1981 coup d'état was motivated by Rawling's dissatisfaction with the management of the country under the Limann administration, as Ghana's economic situation, plagued by spiraling foreign debt and hyperinflation, continued to deteriorate without any real promised political change. Thus, on December 31, 1981, Jerry Rawlings intervened once again in a leftist-backed coup, replacing the government with the PNDC and seeking to transform the country into a Marxist state.

AT&T Corporation, an abbreviation of its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.

Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of 923,769 square kilometres (356,669 mi2). With a population of more than 242 million, it is the most populous country in Africa, and the world's sixth-most populous country. Nigeria borders Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west. Nigeria is a federal republic comprising 36 states and the Federal Capital Territory, where its capital, Abuja, is located. The largest city in Nigeria by population is Lagos, one of the largest metropolitan areas in the world and the second largest in Africa.

On New Year's Eve, December 31, 1986, three disgruntled employees of the Dupont Plaza Hotel in San Juan, Puerto Rico, intentionally set a fire. The employees were involved in a labor dispute with the owners. The fire killed between 96 and 98 people and injured 140 others. It is the most catastrophic hotel fire in Puerto Rican history and the second deadliest hotel fire in U.S. territory in history, after the Winecoff Hotel fire in Atlanta in 1946. This fire and other incidents of its kind gave rise to amendments to security policies to be implemented at hotels around the world.

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR), was a transcontinental country that spanned much of Eurasia from its formation in 1922 until its dissolution in 1991. It was the world's third-most populous country, the largest by area, and bordered twelve other countries. A diverse multinational state, it was organized as a federal union of national republics, with the largest and most populous being the Russian Soviet Federative Socialist Republic (SFSR). The world's flagship communist state, it was governed by the Communist Party under Marxism–Leninism, through soviet councils. The Soviet economy was also centrally planned. Its capital and largest city was Moscow.

Czechoslovakia was a country in Central Europe. The country was bordered by Austria and Hungary to the south, Germany to the west and northwest, Poland to the northeast, and Ukraine to the southeast. Czechoslovakia had a hilly and mostly mountainous landscape that covered an area of 127,906 square kilometers (49,385 sq mi) with a mostly temperate continental and oceanic climate. The capital and largest city was Prague; other major cities and urban areas include Brno, Ostrava, Plzeň, Liberec, Bratislava and Košice.

Kiribati, officially the Republic of Kiribati, is an archipelagic country spanning the Micronesia and Polynesia sub-regions of Oceania in the central Pacific Ocean. The state comprises 32 atolls and other islands and one remote raised coral island, Banaba. Its total land area is 811 km2 (313 sq mi) dispersed over 3,441,810 km2 (1,328,890 sq mi) of ocean. The spread of the country's islands, from Banaba in the west to Kiritimati in the east, straddles the equator and the 180th meridian. The International Date Line goes around Kiribati and swings far to the east, almost reaching 150°W. This brings Kiribati's easternmost islands, the southern Line Islands south of Hawaii, into the same day as the Gilbert Islands and places them in the most advanced time zone on Earth: UTC+14.

The First Chechen War, also referred to as the First Russo-Chechen War, was a conflict between the separatist Chechen Republic of Ichkeria and the Russian Federation from 1994 to 1996. The conflict ended in a peace treaty that saw Russian forces withdraw from the territory only for them to invade again three years later, sparking the Second Chechen War of 1999–2009.

Calvin and Hobbes is an American daily comic strip created by cartoonist Bill Watterson and syndicated from November 18, 1985, to December 31, 1995. The strip centers on Calvin, a six-year-old boy characterized by his vivid imagination and rowdy behavior, and Hobbes, his stuffed tiger, who is a sentient being to Calvin but a regular toy to everyone else. Set in the contemporary United States, the strip includes a recurring cast such as Calvin's parents, his classmate Susie Derkins, his teacher Miss Wormwood, and his babysitter Rosalyn.

The European Exchange Rate Mechanism (ERM II) is a system introduced by the European Economic Community on 1 January 1999 alongside the introduction of a single currency, the euro as part of the European Monetary System (EMS), to reduce exchange rate variability and achieve monetary stability in Europe.

The president of Russia, officially the president of the Russian Federation, is the executive head of state of Russia. The president is the chair of the Federal State Council and the supreme commander-in-chief of the Russian Armed Forces. It is the highest office in Russia.

The Panama Canal is an artificial 82-kilometer (51-mile) waterway in Panama that connects the Caribbean Sea with the Pacific Ocean. It cuts across the narrowest point of the Isthmus of Panama, and is a conduit for maritime trade between the Atlantic Ocean and the Pacific Ocean. Locks at each end lift ships up to Gatun Lake, an artificial fresh water lake 26 meters (85 ft) above sea level, created by damming the Chagres River and Lake Alajuela to reduce the amount of excavation work required for the canal. Locks then lower the ships at the other end. The original locks are 33.5 meters (110 ft) wide and allow the passage of Panamax ships. A third, wider lane of locks was constructed between September 2007 and May 2016. The expanded waterway began commercial operation on 26 June 2016. The new locks allow for the transit of larger, Neopanamax ships. An average of 200,000,000 litres of fresh water is used in a single passing of a ship. The canal is threatened by low water levels during droughts.

Indian Airlines Flight 814, commonly known as IC 814, was an Indian Airlines Airbus A300 that was hijacked on 24 December 1999 by five members of Harkat-ul-Mujahideen. The passenger flight, en route from Kathmandu to Delhi, was taken over shortly after it entered Indian airspace at about 16:53 IST. The aircraft had 190 occupants: 179 passengers and 11 crew members including Captain Devi Sharan, First Officer Rajinder Kumar, and Flight Engineer Anil Kumar Jaggia.

The national flag of Rwanda is a horizontal tricolour consisting of a light blue top half, two equal bands of yellow and green in the bottom half, and a golden sun in the upper fly-side corner. It was adopted on 31 December 2001. Its design is defined in the Rwandan constitution and regulations regarding its use and manufacture are outlined in the country's national flag law.

Taipei 101, formerly known as the Taipei World Financial Center, is a 508-meter, 101-story skyscraper in Taipei, Taiwan. It is owned by the Taipei Financial Center Corporation. It was officially classified as the world's tallest building from its opening on 31 December 2004, until it was surpassed by the Burj Khalifa in 2009. As of 2026, it is the tallest building in Taiwan and the eleventh tallest in the world.

A blue moon refers to the presence of a second full moon in a calendar month, the third full moon in a season containing four, or a moon that appears blue due to atmospheric effects.

A destructive and deadly three-day-long tornado outbreak impacted the central and lower Mississippi Valley from December 30, 2010, to January 1, 2011. Associated with a low pressure system and a strong cold front, 37 tornadoes tracked across five states over the length of the severe event, killing nine and injuring several others. Activity was centered in the states of Missouri and later Mississippi on December 31. Seven tornadoes were rated EF3 on the Enhanced Fujita Scale; these were the strongest during the outbreak. Non-tornadic winds were recorded to have reached as high as 80 mph (130 km/h) at eight locations on December 31, while hail as large as 2.75 in (7.0 cm) was documented north-northeast of Mansfield, Missouri. Damage estimates from the outbreak totaled US$136.98 million. This is the most prolific tornado outbreak in Missouri in the month of December.

On 31 December 2014, a deadly crush occurred in Shanghai, near Chen Yi Square on the Bund, where around 300,000 people had gathered for the new year celebration. Thirty-six people were killed and another 49 were injured, and of those 49 injured, 13 were injured seriously.

Downtown Dubai or The Dubai Downtown is a large-scale, mixed-use complex in Dubai, United Arab Emirates. It was developed by the Emaar real estate development company. Before 2000, this area was called Umm Al Tarif. It is home to some of the city's most notable landmarks, including Burj Khalifa, the world's tallest building; the Dubai Mall, the second-largest mall in the world and The Dubai Fountain, the world's largest choreographed fountain. It covers an area of 2 square kilometres (0.77 sq mi), at an estimated cost of US$20 billion upon completion and, as of 2017, has a population of 13,201.

On 31 December 2018, at approximately 6:02 a.m. local time, an apartment block in Magnitogorsk, Chelyabinsk Oblast, Russia, partially collapsed. The collapse killed 39 people and injured 17 more. The cause of the collapse is believed to have been a gas explosion.

The World Health Organization (WHO) is a specialized agency of the United Nations (UN) which coordinates responses to international public health issues and emergencies. It is headquartered in Geneva, Switzerland, and has six regional offices and 150 field offices worldwide. Only sovereign states are eligible to join, and it is the largest intergovernmental health organization at the international level.

A COVID‑19 vaccine is designed to induce immunity against SARS-CoV-2, the virus responsible for coronavirus disease 2019 (COVID-19). COVID-19 vaccines help reduce the risk of severe illness, hospitalization and death from the virus.