June 30 in History

Pope Marcellinus (sometimes anglicized to Marceline or Marcelline) was the bishop of Rome from 30 June 296 to his death in 304. Some sources claim he may have renounced Christianity during Emperor Diocletian's persecution of Christians – which might explain why he is omitted from lists of martyrs. The claim is rejected by others, including Augustine of Hippo. Marcellinus is today venerated as a saint in the Catholic Church and in the Serbian Orthodox Church.

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 Ming dynasty, officially the Great Ming, was an imperial dynasty of China that ruled from 1368 to 1644, following the collapse of the Mongol-led Yuan dynasty. The Ming was the last imperial dynasty of China ruled by the Han people, the majority ethnic group in China. Although the primary capital of Beijing fell in 1644 to a rebellion led by Li Zicheng, numerous rump regimes ruled by remnants of the Ming imperial family, collectively called the Southern Ming, survived until 1662.

The Battle of Arbedo was fought on 30 June 1422 between the Duchy of Milan and the Swiss Confederation, and ended with a Milanese victory. In 1419, the Swiss cantons of Uri and Unterwalden bought the fortified town of Bellinzona from the House of Sax but were unable to defend it adequately. When they rejected a Milanese proposal to purchase Bellinzona in 1422, a Milanese force under the command of the condottiero Francesco Bussone da Carmagnola attacked and defeated the Swiss garrison and occupied the town. A Swiss attempt to recapture Bellinzona with the support of other cantons including Lucerne and Zug led to the battle at the village of Arbedo, 3 km (1.9 mi) north of the town. The Swiss were mainly equipped with halberds and were initially successful in repelling two Milanese cavalry charges. Carmagnola then brought up his crossbowmen on the Swiss flanks and ordered his men-at-arms to dismount and fight on foot with their lances, which outreached the halberds. The Milanese forced the Swiss back onto a nearby hill, but the appearance of a band of foragers, whom the Milanese mistakenly thought were reinforcements, saved the Swiss from total defeat. When the Milanese force pulled back to reform, the Swiss withdrew from the battlefield, both sides having taken heavy casualties. In a historiographical tradition of Zug, the bearer of the cantonal banner, Peter Kälin, was slain, and the banner was taken up by his son, who was slain in his turn. The banner was saved by one Hans Landwing, and was later lost against the French. The victory secured Bellinzona and the Leventina for the Duchy. In addition, the Duchy regained the Val d'Ossola, thus the Swiss lost all their territorial gains. The defeat discouraged Swiss expansion towards Lake Maggiore for a long time. However, it was this defeat at Arbedo that led to the Swiss increasing the number of pikemen in their armies.

The Kingdom of France is the historiographical name or umbrella term given to various political entities of France in the medieval and early modern period. It was one of the most powerful states in Europe from the High Middle Ages to 1848 during its dissolution. It was also an early colonial power, with colonies in Asia and Africa, and the largest being New France in North America geographically centred on the Great Lakes. In the 16th to the 18th centuries, the French colonial empire stretched from a total area at its peak in 1680 to over 10 million square kilometres, the second-largest empire in the world at the time behind the Spanish Empire.

Henry II (French: Henri II; 31 March 1519 – 10 July 1559) was King of France from 1547 until his death in 1559. The second son of Francis I and Claude, Duchess of Brittany, he became Dauphin of France upon the death of his elder brother Francis in 1536. As a child, Henry and his elder brother spent over four years in captivity in Spain as hostages in exchange for their father. Henry pursued his father's policies in matters of art, war, and religion. He persevered in the Italian Wars against the Habsburgs and tried to suppress the Reformation, even as the Huguenot numbers were increasing drastically in France during his reign. Under the April 1559 Peace of Cateau-Cambrésis which ended the Italian Wars, France renounced its claims in Italy, but gained certain other territories, including the Pale of Calais and the Three Bishoprics. These acquisitions strengthened French borders while the abdication of Charles V, Holy Roman Emperor in January 1556 and division of his empire between Spain and Austria provided France with greater flexibility in foreign policy. Nostradamus also served King Henry as physician and astrologer. In June 1559, Henry was injured in a jousting tournament held to celebrate the treaty, and died ten days later after his surgeon, Ambroise Paré, was unable to cure the wound inflicted by Gabriel de Montgomery, the captain of his Scottish Guard. Though he died early, the succession appeared secure, for he left four young sons – as well as a widow (Catherine de' Medici) to lead a capable regency during their minority. Three of those sons lived long enough to become king; but their youth and sometimes infirmity, and the unpopularity of Catherine's regency, led to challenges to the throne by powerful nobles, and helped to spark the French Wars of Religion between Catholics and Protestants, and an eventual end to the House of Valois as France's ruling dynasty.

Castillo San Felipe del Morro, most commonly known as El Morro, is a large fortress and citadel in the Old San Juan historic quarter of San Juan, the capital city and municipality of Puerto Rico. Commissioned by King Charles I of Spain in 1539, it was first built as a fortified tower in honor of King Philip II, who oversaw its expansion into a hornwork bastion fort by 1595. Over the next 200 years, especially in the reign of King Charles III, El Morro continued to be developed to reach its current form in 1787. Rising 43 metres (140 ft) from the Atlantic shoreline with 5.5 to 7.6 metres thick walls, the six-leveled edifice stands on a steep, rocky headland promontory on San Juan Islet guarding the entry to San Juan Bay, the harbor of Old San Juan. El Morro, alongside La Fortaleza, San Cristóbal, El Cañuelo, and other forts part of the Walls of Old San Juan, protected strategically and militarily important Puerto Rico, or La Llave de las Indias, from invasion by competing world powers during the Age of Discovery and Sail. It was designated a World Heritage Site by UNESCO in 1983.

The University of Tartu (Estonian: Tartu Ülikool) is a public research university in Tartu, Estonia. It is the national university of Estonia, as well as the largest and oldest university in the country. The university was founded in 1632 by Gustavus Adolphus, at the time the king of Sweden. Currently, 15,573 students study at the university, of whom 1,435 are foreigners (9%). Most of the curriculum is instructed in Estonian. There are also 30 programmes taught in English: three at the undergraduate level and 27 at the master's level, including the Erasmus Mundus programme in Excellence in Analytical Chemistry. The historical buildings of the university are included in the European Heritage Label list as "embodiment of the ideas of a university in the Age of Enlightenment". The university is a member of the Coimbra Group and the Utrecht Network. The mascot of the university is a blue bird called Tiksu.

Charles I was King of England, Scotland, and Ireland from 27 March 1625 until his execution in 1649.

The Deluge was a series of mid-17th-century military campaigns in the Polish–Lithuanian Commonwealth. In a stricter sense, the term refers to the Swedish invasion and occupation of the Commonwealth as a theatre of the Northern War of 1655–1660 only; in Poland and Lithuania this period is called the Swedish Deluge or less commonly the Russo–Swedish Deluge due to the simultaneous Russo-Polish War. In a wider sense, it applies to the period between the Khmelnytsky Uprising of 1648 and the Truce of Andrusovo in 1667, comprising the Polish theatres of the Russo-Polish and Second Northern Wars. The term "deluge" was popularized by Henryk Sienkiewicz in his novel The Deluge (1886).

The Invitation to William was a letter sent by seven Englishmen (six nobles and a bishop), later referred to as "the Immortal Seven", to stadtholder William III, Prince of Orange, dated 30 June 1688 (Julian calendar, 10 July Gregorian calendar). In England, the heir apparent to the throne, James Francis Edward Stuart, had just been born to the unpopular King James II of England, and baptised a Catholic. The letter asked William, who was a nephew and son-in-law of James II, to use military intervention to force the King to make his eldest daughter, Mary, William's Protestant wife, his heir. The letter alleged that the newborn prince was an impostor. The letter informed William that if he were to land in England with a small army, the signatories and their allies would rise up and support him. The Invitation briefly rehashed the grievances against King James. It claimed that the King's son was supposititious (fraudulently substituted) and that the English people generally believed him to be so. The present consensus among historians is that he was almost certainly their real son. The letter deplored that William had sent a letter to James congratulating him for the birth of his son, and offered some brief strategy on the logistics of the proposed landing of troops. It was carried to William in The Hague by Rear Admiral Arthur Herbert (the later Lord Torrington) disguised as a common sailor, and identified by a secret code. The invitation caused William to carry out his existing plans to land with a large Dutch army, culminating in the Glorious Revolution during which James was deposed and replaced by William and Mary as joint rulers. William and Mary had previously asked for such an invitation when William started to assemble an invasion force that April. This request was done through secret correspondence that had been taking place since April 1687, between them and several leading English politicians, regarding how best to counter the pro-Catholic policies of James. William later justified his invasion by the fact that he was invited, which helped to disguise the military, cultural, and political impact that the Dutch regime had on England when his reign was unpopular and he feared a popular uprising. The signatories were: Henry Sydney (who wrote the letter) Edward Russell Charles Talbot, 12th Earl of Shrewsbury William Cavendish, 4th Earl of Devonshire Thomas Osborne, 1st Earl of Danby Richard Lumley, 2nd Viscount Lumley Henry Compton, Bishop of London Danby and Compton were generally considered to be Tories (the "court party"), the other five to be Whigs (the "country party"). After William's rise to power, Talbot, Cavendish, and Osborne were elevated to duke, Lumley elevated to earl, and Sydney and Russell were created earls. Compton as Bishop of London had his suspension (for refusing to suspend the strongly anti-Catholic John Sharp), running into a third year, lifted; he performed the coronation, granted lands in Maryland to his second cousin, and became a commissioner in revision of the litany.

Godard van Reede, 1st Earl of Athlone (14 June 1644 – 11 February 1703) was a Dutch States Army officer who rose to prominence during the Williamite War in Ireland. During the Franco-Dutch War, his bravery and meticulous execution of duties as a cavalry officer caught William of Orange's attention. Rapid promotions followed, and in 1691, he was entrusted with command of the war in Ireland. Alongside Waldeck and Schomberg, Athlone became one of the few senior officers to whom William granted independent command over the Anglo-Dutch forces during his wars. He decisively defeated a Franco-Irish army at the Battle of Aughrim, securing control over Ireland. Back on the continent, he took part in the key battles and sieges of the Nine Years’ War. After William's death during the War of the Spanish Succession, he vied for command of the combined Anglo-Dutch army in the Low Countries, but the role was given to the Duke of Marlborough. Nevertheless, in 1702, the Dutch States General appointed Athlone as commander of the Dutch forces, but he died four months later.

The Battle of Ekeren, which took place on 30 June 1703, was a battle of the War of the Spanish Succession. A Bourbon army of around 24,000 men, consisting of troops from France, Spain and Cologne, surrounded a smaller Dutch force of 12,000 men, which however managed to break out and retire to safety. The battle had limited strategic effect, but, while showing the skill of the Dutch troops, it highlighted the disunity in the Anglo-Dutch command structure. Conflicts arose between various commanders, who all blamed each other for the near-disaster. In France Louis XIV was also displeased, as his superior force had let the Dutch escape.

The Seven Years' War, 1756 to 1763, was a global war fought by numerous great powers, primarily in Europe, with significant subsidiary campaigns in North America and the Indian subcontinent. The primary warring states were Great Britain and Prussia fighting against France and Austria, with other countries joining these coalitions: Portugal, Spain, Sweden, and Russia, plus Saxony and many other minor states of the Holy Roman Empire. Related conflicts include the Third Silesian War, French and Indian War, Third Carnatic War, Anglo-Spanish War (1762–1763), and Spanish–Portuguese War.

The Northwest Indian War was an armed conflict for control of the Northwest Territory between the United States and a loose confederation of Native American peoples who called themselves the United Indian Nations but are better known today as the Northwestern Confederacy. The United States Army considers the conflict to be the first of the American Indian Wars. Following centuries of conflict involving Native Americans and Europeans for control of the region, the lands comprising the Northwest Territory were ceded by Great Britain to the newly formed United States in the 1783 Treaty of Paris. The treaty used the Great Lakes as a border between British North America and the US, and led to the Americans assuming control over the Ohio Country and Illinois Country, which had previously been prohibited to European settlement. As US settlers moved into the Northwest Territory, they were resisted by local Native Americans, and a Wyandot-led confederacy was formed in 1785 to resist American expansion onto their lands. Four years after the confederacy was formed, the Constitution of the United States went into effect; George Washington was sworn in as president, which made him the commander-in-chief of all U.S. military forces. Washington subsequently directed the United States Army to enforce American sovereignty over the Northwest Territory. The U.S. Army, mainly consisting of untrained recruits and bolstered by volunteer militiamen, suffered a series of significant defeats, including the 1790 Harmar campaign and St. Clair's defeat in 1791, which are among the worst defeats ever suffered in the history of the United States Army. St. Clair's defeat destroyed most of the U.S. Army and left white settlers on the American frontier vulnerable to attack. Washington appointed General Anthony Wayne to rebuild the U.S. Army, with Wayne reorganizing it into the Legion of the United States in 1792 and spending a year training and supplying the Legion. He proceeded to lead a methodical campaign up the Great Miami and Maumee river valleys in the Ohio Country before leading the Legion to a decisive victory at the Battle of Fallen Timbers near the Lake Erie in 1794. Wayne subsequently established Fort Wayne at the Miami capital of Kekionga, and the defeated Northwestern Confederacy was forced to cede extensive territory, including much of present-day Ohio, to the US in the 1795 Treaty of Greenville. The war confirmed American control over the Northwest Territory, although the region would be invaded by British forces during the War of 1812.

The United States Congress is the legislative branch of the federal government of the United States. It is a bicameral legislature, including a lower body, the U.S. House of Representatives, and an upper body, the U.S. Senate. They both meet in the United States Capitol in Washington, D.C.

Acrobatics is the performance of human feats of balance, agility, and motor coordination. Acrobatic skills are used in performing arts, sporting events, and martial arts. Extensive use of acrobatic skills are most often performed in acro dance, circus, gymnastics, and freerunning and to a lesser extent in other athletic activities including ballet, slacklining and diving. Although acrobatics is most commonly associated with human body performance, the term is used to describe other types of performance, such as aerobatics.

The 1860 Oxford evolution debate took place at the Oxford University Museum in Oxford, England, on 7 July 1860, seven months after the publication of Charles Darwin's On the Origin of Species. Several prominent British scientists and philosophers participated, including Thomas Henry Huxley, Bishop Samuel Wilberforce, Benjamin Brodie, Joseph Dalton Hooker and Robert FitzRoy. The encounter is often known as the Huxley–Wilberforce debate or the Wilberforce–Huxley debate, although this description is somewhat misleading. It was not a formal debate between the two, but rather it was an animated discussion after the presentation of a paper by John William Draper of New York University, on the intellectual development of Europe with relation to Darwin's theory (one of a number of scientific papers presented during the week as part of the British Association's annual meeting). Although Huxley and Wilberforce were not the only participants in the discussion, they were reported to be the two dominant parties. The debate is best remembered today for a heated exchange in which Wilberforce supposedly asked Huxley whether it was through his grandfather or his grandmother that he claimed his descent from a monkey. Huxley is said to have replied that he would not be ashamed to have a monkey for his ancestor, but he would be ashamed to be connected with a man who used his great gifts to obscure the truth. However, what Huxley and Wilberforce actually said is uncertain, and subsequent accounts were subject to distortion since no verbatim account of the debate exists. One eyewitness suggests that Wilberforce's question to Huxley may have been "whether, in the vast shaky state of the law of development, as laid down by Darwin, any one can be so enamoured of this so-called law, or hypothesis, as to go into jubilation for his great great grandfather having been an ape or a gorilla?", whereas another suggests he may have said that "it was of little consequence to himself whether or not his grandfather might be called a monkey or not."

The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.

The Principality of Serbia (Serbian: Књажество Србија, romanized: Knjažestvo Srbija) was an autonomous, later sovereign state in the Balkans that came into existence as a result of the Serbian Revolution. Its creation was negotiated first through an unwritten agreement between Miloš Obrenović, leader of the Second Serbian Uprising, and Ottoman official Marashli Pasha, followed by a series of decrees of the Sublime Porte in 1828–1833. Its de facto independence ensued in 1867, following the evacuation of the remaining Ottoman troops from the Belgrade Fortress and the country; its independence was recognized internationally in 1878 by the Treaty of Berlin. In 1882 the country was elevated to the status of kingdom.

Charles Julius Guiteau ( ghih-TOH; September 8, 1841 – June 30, 1882) was an American office seeker who assassinated the 20th president of the United States, James A. Garfield, in 1881. A failed lawyer suffering from mental illness, Guiteau delusionally believed he had played a major role in Garfield's election victory, for which he should have been rewarded with a consulship. Guiteau felt frustrated and offended by the Garfield administration's rejections of his applications to serve in Vienna or Paris to such a degree that he shot Garfield in Washington, D.C., on July 2, 1881. Garfield died on September 19 from infections related to the wounds. Caught immediately after shooting Garfield, Guiteau was tried, convicted, and publicly executed by hanging on June 30, 1882.

Montreal is the largest city in the province of Quebec, the second-largest in Canada, and the eighth-largest in North America. Founded in 1642 as Ville-Marie, or "City of Mary", it now takes its name from Mount Royal, the triple-peaked mountain around which the early settlement was built. The city is centred on the Island of Montreal and a few, much smaller, peripheral islands, the largest of which is Île Bizard. It lies 196 kilometres (122 mi) east of the national capital, Ottawa, and 258 kilometres (160 mi) southwest of the provincial capital, Quebec City.

The Homestead strike, also known as the Homestead steel strike, Homestead massacre, or Battle of Homestead, was an industrial lockout and strike that occurred in Pennsylvania in the United States, in 1892. It began on July 1, 1892, culminating in a battle in which strikers defeated private security agents on July 6, 1892. The governor responded by sending in the National Guard to protect strikebreakers. The dispute occurred at the Homestead Steel Works in the Pittsburgh-area town of Homestead, Pennsylvania, between the Amalgamated Association of Iron and Steel Workers (the AA) and the Carnegie Steel Company. The final result was a major defeat for the union strikers and a setback for their efforts to unionize steelworkers. The battle was a pivotal event in U.S. labor history.

The 1900 Hoboken Docks fire occurred on June 30, 1900, and killed at least 326 people in and around the Hoboken, New Jersey piers of the Norddeutscher Lloyd (NDL) shipping company. The piers were in New York Harbor, at the foot of 3rd and 4th Streets in Hoboken, across the North River (Hudson River) from Manhattan in New York City. The area, a few blocks north of Hoboken Terminal, is now mostly part of the Hudson River, without docks: a waterfront bicycle path lines it. The fire began when cotton bales stored on NDL's southernmost wharf caught fire, and winds carried the flames to nearby barrels of volatile liquids, such as turpentine and oil, which exploded in rapid succession. It burned NDL's Hoboken piers to the waterline, consumed or gutted nearby warehouses, gutted three of NDL's major transatlantic liners, and damaged or destroyed nearly two dozen smaller craft. Most of the victims were seamen and other workers but included women visiting one of the ships.

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist best known for developing the theory of relativity. Einstein also made important contributions to quantum theory. His mass–energy equivalence formula E = mc2, which arises from special relativity, has been called "the world's most famous equation". He received the 1921 Nobel Prize in Physics for "his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". Born as a subject to the Kingdom of Württemberg, part of the German Empire, Einstein moved to Switzerland in 1895, forsaking his citizenship the following year. In 1896, at the age of seventeen, he enrolled in the mathematics and physics teaching diploma program at the Swiss federal polytechnic school in Zurich, graduating in 1900. He acquired Swiss citizenship a year later, which he kept for the rest of his life, and afterwards secured a permanent position at the Swiss Patent Office in Bern. In 1905, he submitted a successful PhD dissertation to the University of Zurich. In 1914, he moved to Berlin to join the Prussian Academy of Sciences and the Humboldt University of Berlin, becoming director of the Kaiser Wilhelm Institute for Physics in 1917; he also became a Prussian and consequently also German citizen again. In 1933, while Einstein was visiting the United States, Adolf Hitler came to power in Germany. Horrified by the Nazi persecution of his fellow Jews, he decided to remain in the US, and was granted American citizenship in 1940. On the eve of World War II, he endorsed a letter to President Franklin D. Roosevelt alerting him to the potential German nuclear weapons program and recommending that the US begin similar research, later carried out as the Manhattan Project. In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics. In the middle part of his career, Einstein made important contributions to statistical mechanics and quantum theory. Especially notable was his work on the quantum physics of radiation, in which light consists of particles, subsequently called photons. With physicist Satyendra Nath Bose, he laid the groundwork for Bose–Einstein statistics. For much of the last phase of his academic life, Einstein worked on two endeavors that ultimately proved unsuccessful. First, he advocated against quantum theory's introduction of fundamental randomness into science's picture of the world, objecting that "God does not play dice". Second, he attempted to devise a unified field theory by generalizing his geometric theory of gravitation to include electromagnetism. As a result, he became increasingly isolated from mainstream modern physics. Many things are named after him, including the element Einsteinium. In 1999, he was named Time's Person of the Century.

The Federal Meat Inspection Act of 1906 (FMIA) is a U.S. law that makes it illegal to adulterate or misbrand meat and meat products being sold as food, and ensures that meat and meat products are slaughtered and processed under strictly regulated sanitary conditions. These requirements also apply to imported meat products, which must be inspected under equivalent foreign standards. United States Department of Agriculture (USDA) inspection of poultry was added by the Poultry Products Inspection Act of 1957 (PPIA). The Food, Drug, and Cosmetic Act authorizes the Food and Drug Administration (FDA) to provide inspection services for all livestock and poultry species not listed in the FMIA or PPIA, including venison and buffalo. The Agricultural Marketing Act authorizes the USDA to offer voluntary, fee-for-service inspection services for these same species.

The Tunguska event was the explosion of between 3 and 50 megatons TNT equivalent in the Russian Empire's Yeniseysk Governorate, near the Podkamennaya Tunguska River in modern Krasnoyarsk Krai, on the morning of 30 June [O.S. 17 June] 1908. It was the largest impact event on Earth in recorded history (though much larger impacts occurred in prehistoric times, including the Chicxulub impact which ended the Cretaceous period). The event is attributed to a meteor air burst, the atmospheric explosion of a stony asteroid about 50–60 m (160–200 ft) wide. The asteroid approached from the east-south-east, probably with a relatively high speed of about 27 km/s. Though the incident is classified as an impact event, the object is thought to have exploded at an altitude of 5–10 km (3–6 mi) rather than hitting the Earth's surface, leaving no impact crater. Occurring over an area of 2,150 km2 (830 sq mi) in the sparsely populated East Siberian taiga, the explosion felled a significant amount of trees. Eyewitness accounts suggest up to three people may have died. An explosion of the Tunguska magnitude would be capable of destroying a large metropolitan area. The event has been depicted in numerous works of fiction.

On Sunday, June 30, 1912, a violent and deadly tornado devastated the city of Regina, Saskatchewan, Canada. The tornado, also known as the Regina Cyclone or the Regina tornado of 1912, remains the deadliest tornado in Canadian history with a total of 28 fatalities and about 300 people injured. At about 4:50 p.m., green funnel clouds formed and touched down south of the city, tearing through the residential area between Wascana Lake and Victoria Avenue, and continuing through the downtown business district, rail yards, warehouse district, and northern residential area.

World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. One of the deadliest conflicts in history, World War I resulted in an estimated 15 to 22 million deaths, including those in war crimes and genocides. The war also helped spread the Spanish flu pandemic. The conflict saw important developments in weaponry, including the first large-scale use of machine guns, artillery, aircraft, chemical weapons, and tanks.

Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was the 29th president of the United States, serving from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular presidents at the time of his death. After that, a number of scandals were exposed that greatly damaged his reputation. Harding lived in rural Ohio all his life, except when political service took him elsewhere. As a young man, he bought The Marion Star and built it into a successful newspaper. Harding served in the Ohio State Senate from 1900 to 1904, and was lieutenant governor for two years. He was defeated for governor in 1910, but was elected to the United States Senate in 1914—the state's first direct election for that office. Harding ran for the Republican nomination for president in 1920, but was considered a long shot before the convention. When the leading candidates could not garner a majority, and the convention deadlocked, support for Harding increased, and he was nominated on the tenth ballot. He conducted a front porch campaign, remaining mostly in Marion and allowing people to come to him. He promised a return to normalcy of the pre–World War I period, and defeated Democratic nominee James M. Cox in a landslide, becoming the first sitting senator to be elected president. Harding appointed a number of respected figures to his cabinet, including Andrew Mellon at Treasury, Herbert Hoover at Commerce, and Charles Evans Hughes at the State Department. A major foreign policy achievement came with the Washington Naval Conference of 1921–1922, in which the world's major naval powers agreed on a naval limitations program that lasted a decade. Harding released political prisoners who had been arrested for their opposition to World War I. In 1923, he died of a heart attack in San Francisco while on a western tour, and was succeeded by Vice President Calvin Coolidge. The exposure of scandals after Harding's death, including Teapot Dome, as well as an extramarital affair with Nan Britton, eroded his popularity. His interior secretary, Albert B. Fall, and his attorney general, Harry Daugherty, were each later tried for corruption in office; Fall was convicted and Daugherty was not. These trials greatly damaged Harding's posthumous reputation. In historical rankings of U.S. presidents during the decades after his term in office, Harding was often rated among the worst. In the subsequent decades, some historians have begun to reassess Harding's record in office.

Charles Evans Hughes was an American politician, academic, and jurist who served as the 11th chief justice of the United States from 1930 to 1941. A member of the Republican Party, he previously was the 36th governor of New York (1907–1910), an associate justice of the Supreme Court (1910–1916), and 44th U.S. secretary of state (1921–1925). He was the Republican nominee in the 1916 presidential election, narrowly losing to incumbent president Woodrow Wilson.

The Night of the Long Knives, also called the Röhm purge or Operation Hummingbird, was a purge that took place in Nazi Germany from 30 June to 2 July 1934. Chancellor Adolf Hitler, urged on by Hermann Göring and Heinrich Himmler, ordered a series of extrajudicial executions intended to consolidate his power and alleviate the German military's concerns about the role of Ernst Röhm and the Sturmabteilung (SA), the Nazis' paramilitary organization, known colloquially as brownshirts. Nazi propaganda presented the murders as a preventive measure against an alleged imminent coup by the SA under Röhm – the so-called Röhm Putsch.

Haile Selassie I was Emperor of Ethiopia from 1930 to 1974. He rose to power as the Regent Plenipotentiary of Ethiopia under Empress Zewditu between 1916 and 1930.

An emergency telephone number is a number that allows a caller to contact local emergency services for assistance. The emergency number differs from country to country; it is typically a three-digit number so that it can be easily remembered and dialed quickly. Some countries have a different emergency number for each of the different emergency services; these often differ only by the last digit.

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.

The Chevrolet Corvette is a line of American two-door, two-seater sports cars manufactured and marketed by General Motors under the Chevrolet marque since 1953. Throughout eight generations, indicated sequentially as C1 to C8, the Corvette is noted for its performance, distinctive styling, lightweight fiberglass or composite bodywork, and competitive pricing. The Corvette has had domestic mass-produced two-seater competitors fielded by American Motors, Ford, and Chrysler; it is the only one continuously produced by a United States auto manufacturer. It serves as Chevrolet's halo car.

Trans World Airlines (TWA) was a trunk carrier, a scheduled airline in the United States that operated from 1930 until it was acquired by American Airlines in 2001. It was formed as Transcontinental & Western Air to operate a route from New York City to Los Angeles via St. Louis, Kansas City, and other stops, with Ford Trimotors. With American, United, and Eastern, it was one of the "Big Four" domestic airlines in the United States formed by the Spoils Conference of 1930.

The North American F-100 Super Sabre is an American supersonic jet fighter aircraft designed and produced by the aircraft manufacturer North American Aviation. The first of the Century Series of American jet fighters, it was the first United States Air Force (USAF) fighter capable of supersonic speed in level flight.

The Belgian Congo was a Belgian colony in Central Africa from 1908 until independence in 1960. It is today the Democratic Republic of the Congo (DRC).

The National Organization for Women (NOW) is an American progressive-left feminist organization. Founded in 1966, it is legally a 501(c)(4) social welfare organization. The organization consists of 550 chapters in all 50 U.S. states and in Washington, D.C. It is the largest feminist organization in the United States with around 500,000 members. NOW is regarded as one of the main liberal feminist organizations in the US, and primarily lobbies for gender equality within the existing political system. NOW campaigns for constitutional equality, economic justice, reproductive rights, LGBTQIA+ rights and racial justice, and against violence against women.

Pope Paul VI was head of the Catholic Church and sovereign of Vatican City from 21 June 1963 until his death on 6 August 1978. Succeeding John XXIII, he continued the Second Vatican Council, which he closed in 1965, implementing its numerous reforms. He fostered improved ecumenical relations with Eastern Orthodox and Protestant churches, which resulted in many historic meetings and agreements.

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.

A leap second is a one-second adjustment occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between International Atomic Time (TAI), as measured precisely by atomic clocks, and observed solar time (UT1), which varies due to irregularities and long-term slowdown in the Earth's rotation.

The Southeast Asia Treaty Organization (SEATO) was an international organization for collective defense in Southeast Asia created by the Southeast Asia Collective Defense Treaty signed in September 1954 in Manila, Philippines. The formal institution of SEATO was established on 19 February 1955 at a meeting of treaty partners in Bangkok, Thailand. The organization's headquarters was also in Bangkok. A total of eight members joined the organization in its lifetime.

TWA Flight 847 was a regularly scheduled Trans World Airlines flight from Cairo to San Diego with en route stops in Athens, Rome, Boston, and Los Angeles. On the morning of June 14, 1985, Flight 847 was hijacked soon after takeoff from Athens. The Hezbollah hijackers demanded the release of a total of 766 Shia Muslims from Israeli custody and took the plane repeatedly to Beirut and Algiers. As of 2023, Hezbollah continues to deny involvement.

The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on questions of U.S. constitutional or federal law. It also has original jurisdiction over a narrow range of cases, specifically "all Cases affecting Ambassadors, other public Ministers and Consuls, and those in which a State shall be Party". In 1803, the court asserted the power of judicial review, the ability to invalidate a statute for violating a provision of the Constitution. It is also able to strike down presidential directives for violating either the Constitution or statutory law.

A bloodless coup d'état in Sudan overthrew the democratically elected government of Prime Minister Sadiq al-Mahdi and President Ahmed al-Mirghani on 30 June 1989, ending Sudan's third democratic era. Carried out by a faction of the Sudanese Armed Forces heavily infiltrated and directed by the National Islamic Front (NIF), the coup was led by Brigadier General Omar al-Bashir and architected by Islamist ideologue Hassan al-Turabi, establishing a totalitarian military-religious regime that ruled the country for the next 30 years until its overthrow in 2019.

German reunification, also known as the expansion of the Federal Republic of Germany (BRD), was the process of re-establishing Germany as a single sovereign state, which began on 9 November 1989 and culminated on 3 October 1990 with the dissolution of the German Democratic Republic and the integration of its re-established constituent federated states into the Federal Republic of Germany to form present-day Germany. This date was chosen as the customary German Unity Day, and has thereafter been celebrated each year as a national holiday. On the same date, East and West Berlin were also reunified into a single city, which eventually became the capital of Germany.

Since June 30, 1993, Malta has been subdivided into 68 localities, governed by local councils, Maltese: kunsilli lokali, meaning municipalities or boroughs, and considered by the Maltese as the equivalent to basic villages or towns, where appropriate. These form the most basic type of local government and are subdivisions of the country's first-level regions.

The Airbus A330 is a wide-body airliner developed and produced by Airbus. Airbus began developing larger A300 derivatives in the mid–1970s, giving rise to the A330 twinjet as well as the Airbus A340 quadjet, and launched both designs along with their first orders in June 1987. The A330-300, the first variant, took its maiden flight in November 1992 and entered service with Air Inter in January 1994. The A330-200, a shortened longer-range variant, followed in 1998 with Canada 3000 as the launch operator.

The Jeep Cherokee is a line of sport utility vehicles (SUV) manufactured and marketed by Jeep over six generations. Marketed initially as a variant of the Jeep Wagoneer (SJ), the Cherokee has evolved from a full-size station wagon to one of the first compact SUVs and into its latest generation as a crossover SUV.

Yemenia Flight 626 was a scheduled flight on an Airbus A310-324 twin-engine jet airliner operated by Yemenia that was flying a scheduled international service, from Sanaa in Yemen to Moroni in Comoros, when it crashed on 30 June 2009 at around 1:50 am local time while on approach to Prince Said Ibrahim International Airport, killing all but one of the 153 passengers and crew on board. The sole survivor, 12-year-old girl Bahia Bakari, was found clinging to wreckage after floating in the ocean. Bakari was discharged from the hospital on 23 July 2009.

A wildfire near Yarnell, Arizona–ignited by dry lightning on June 28, 2013–overran and killed 19 members of the Granite Mountain Hotshots, a group of firefighters within the Prescott Fire Department, on June 30. Just one of the hotshots on the crew survived — he was posted as a lookout on the fire and was not with the others when the fire overtook them. The Yarnell Hill Fire was one of the deadliest U.S. wildfires since the 1991 Oakland Hills fire, which killed 25 people, and the deadliest wildland fire for U.S. firefighters since the 1933 Griffith Park fire, which killed 29 "impromptu" civilian firefighters drafted on short notice to help battle the Los Angeles area fire.

The Lockheed C-130 Hercules is an American, four-engined, turboprop, military transport aircraft designed and built by Lockheed. Capable of using unprepared runways for takeoffs and landings, the C-130 was designed as a troop, medical evacuation, and cargo transport aircraft. Its versatile airframe has found other uses, including as a gunship (AC-130), for airborne assault, search and rescue, scientific research support, weather reconnaissance, aerial refueling, maritime patrol, and aerial firefighting. It is the main tactical airlifter for many military forces worldwide. More than 40 variants of the Hercules, including civilian versions marketed as the Lockheed L-100, operate in more than 60 nations.

Donald John Trump is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party, he served as the 45th president from 2017 to 2021.

The Law of the People's Republic of China on Safeguarding National Security in the Hong Kong Special Administrative Region is a national law of China on Hong Kong national security passed on 30 June 2020. It is implemented in Hong Kong in accordance with Hong Kong Basic Law Article 18, which allows for China's national laws to be valid in Hong Kong if they are included in Annex III. It was formulated under the authorization of the National People's Congress decision on Hong Kong national security legislation. The law was passed on 30 June 2020 by the Standing Committee of the National People's Congress as a means of resolving the anti-extradition bill protests instigated by a Hong Kong local bill proposed in 2019 to enable extradition to other territories including the mainland, and came into force the same day.

The Tiger Fire was a wildfire that burned 16,278 acres (6,587 ha) in the U.S. state of Arizona from June to July 2021. The fire was caused by a dry lightning strike in the Prescott National Forest. Although Horsethief Basin Lake was evacuated and both the community of Crown King and the census-designated place of Black Canyon City were threatened, no injuries or deaths were reported, and no buildings were damaged or destroyed. Over 300 fire personnel were assigned to contain the blaze.

Tajikistan, officially the Republic of Tajikistan, is a landlocked country located in Central Asia. Dushanbe is the largest city and the capital city of the country and it is most populous city, with a population of over 1.2 million. Tajikistan borders Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east; it is narrowly separated from Pakistan by Afghanistan's Wakhan Corridor. Its total population exceeds 11 million.