December 9 in History

The Gothic War between the Byzantine Empire during the reign of Emperor Justinian I and the Ostrogoths (Goths) took place from 535 to 554 in the Italian Peninsula, Dalmatia, Sardinia, Sicily, and Corsica. It was the last of the Gothic wars against the Byzantine Empire. The war had its roots in Justinian's ambition to recover the provinces of the former Western Roman Empire, which had been lost to invading barbarian tribes during the Migration Period.

The Battle of Marj Ardabil was a military engagement between the Umayyads and the Khazars in AD 730. A Khazar army led by Barjik, the Khazar Khagan, inflicted a catastrophic defeat on the Umayyads, killing the majority of the army and its leader, al-Jarrah ibn Abdallah. Afterwards, the Khazars sacked Azerbaijan freely at will.

Švitrigaila (before 1370 – 10 February 1452) was Grand Duke of Lithuania from 1430 to 1432. He spent most of his life in largely unsuccessful dynastic struggles against his cousins Vytautas and Sigismund Kęstutaitis.

Our Lady of Guadalupe (Spanish: Nuestra Señora de Guadalupe), also known as the Virgin of Guadalupe (Spanish: Virgen de Guadalupe) and as La Virgen Morena, is a Catholic title of the Blessed Virgin Mary associated with four Marian apparitions to Juan Diego and one to his uncle Juan Bernardino reported in December 1531, when the Mexican territories were part of the Spanish Empire. A venerated image on a cloak (tilmahtli) associated with the apparition is enshrined in the Basilica of Our Lady of Guadalupe in Mexico City. Pope Leo XIII granted a decree of canonical coronation for the image on 8 February 1887. The rite of coronation was executed by the former Archbishop of Mexico, Próspero Alarcón y Sánchez de la Barquera on 12 October 1895. Pope Paul VI raised the shrine to the status of Minor Basilica via his Pontifical decree titled Sacra illa Ædes on 6 October 1976. It is the most-visited Catholic shrine in the world, and the world's third most-visited sacred site.

The Qing dynasty ( CHING), officially the Great Qing, also known as the Qing Empire or Qing China, was a Manchu-led imperial dynasty of China and an early modern empire in East Asia which existed from 1636/1644 to 1912. The last imperial dynasty in Chinese history, the Qing dynasty was preceded by the Ming dynasty and succeeded by the Republic of China. At the height of its power, the empire stretched from the Sea of Japan in the east to the Pamir Mountains in the west, and from the Mongolian Plateau in the north to the South China Sea in the south. Originally emerging from the Later Jin dynasty founded in 1616 and proclaimed in Shenyang in 1636, the dynasty seized control of the Ming capital Beijing and North China in 1644, traditionally considered the start of the dynasty's rule. The dynasty lasted until the Xinhai Revolution of October 1911 led to the abdication of the last emperor in February 1912. The multi-ethnic Qing dynasty assembled the territorial base for modern China. The Qing controlled the most territory of any dynasty in Chinese history, and in 1790 was the fourth-largest empire in world history to that point. It was also the most populous state at the time, with over 426 million citizens in 1907. Nurhaci, leader of the Jianzhou Jurchens and House of Aisin Gioro who was also a vassal of the Ming dynasty, unified Jurchen clans (known later as Manchus) and founded the Later Jin dynasty in 1616, renouncing the Ming overlordship. As the founding Khan of the Manchu state he established the Eight Banners military system, and his son Hong Taiji was declared Emperor of the Great Qing in 1636. As Ming control disintegrated, peasant rebels captured Beijing as the short-lived Shun dynasty, but the Ming general Wu Sangui opened the Shanhai Pass to the Qing army, which defeated the rebels, seized the capital, and took over the government in 1644 under the Shunzhi Emperor and his prince regent. While the Qing became the new rulers of China, resistance from Ming rump regimes and the Revolt of the Three Feudatories delayed the complete conquest until 1683, which marked the beginning of the High Qing era. As an emperor of Manchu ethnic origin, the Kangxi Emperor (1661–1722) consolidated control, relished the role of a Confucian ruler, patronised Buddhism, encouraged scholarship, population and economic growth. To maintain prominence over its neighbors, the Qing leveraged and adapted the traditional tributary system employed by previous dynasties, enabling their continued predominance in affairs with countries on its periphery like Joseon Korea and the Lê dynasty in Vietnam, while extending its control over Inner Asia. The Qing dynasty reached its apex during the reign of the Qianlong Emperor (1735–1796), who led the Ten Great Campaigns of conquest, and personally supervised Confucian cultural projects. After his death, the dynasty faced internal revolts, economic disruption, official corruption, foreign intrusion, and the reluctance of Confucian elites to change their mindset. As peace and prosperity returned, the population rose to 400 million, but taxes and government revenues were fixed at a low rate, soon leading to a fiscal crisis. Following China's defeat in the Opium Wars, the United Kingdom, France, Russia, and the United States forced the Qing government to sign unequal treaties, granting them trading privileges, extraterritoriality and treaty ports under their control, beginning the century of humiliation. The Taiping Rebellion (1850–1864) and the Dungan Revolt (1862–1877) in western China led to the deaths of over 20 million people, from famine, disease, and war. The Tongzhi Restoration in the 1860s brought vigorous reforms and the introduction of foreign military technology in the Self-Strengthening Movement. Defeat in the First Sino-Japanese War (1894–1895) led to loss of suzerainty over Korea and cession of Taiwan to the Empire of Japan. The ambitious Hundred Days' Reform in 1898 proposed fundamental change, but was poorly executed and terminated by the Empress Dowager Cixi (1835–1908) in the Wuxu Coup. In 1900, anti-foreign Boxers killed many Chinese Christians and foreign missionaries; in retaliation, the Eight-Nation Alliance invaded China and imposed a punitive indemnity. In response, the government initiated unprecedented fiscal and administrative reforms, including elections, a new legal code, and the abolition of the imperial examination system. Sun Yat-sen and revolutionaries debated reform officials and constitutional monarchists such as Kang Youwei and Liang Qichao over how to transform the Manchu-ruled empire into a modernised Han state. After the deaths of the Guangxu Emperor and Cixi in 1908, Manchu conservatives at court blocked reforms. The Wuchang Uprising on 10 October 1911 led to the Xinhai Revolution. The abdication of the Xuantong Emperor on 12 February 1912 brought the dynasty to an end.

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 had led King George III and much of 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 colonial Empire 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 in a panic, on March 5, 1770. In mid-1774, with tensions escalating even further between the British Army and the Continental army, the British Parliament imposed the Intolerable Acts, an attempt to disarm British-American colonists, 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 pretty 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 armed force led under the command of John Burgoyne was forced to surrender at Saratoga in an American victory that also proved a crucial role 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). American Indian 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 British American colonists 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.

Augustin-Jean Fresnel (10 May 1788 – 14 July 1827) was a French civil engineer and physicist whose research in optics led to the almost unanimous acceptance of the wave theory of light, fully supplanting Newton's corpuscular theory, from the late 1830s until the end of the 19th century. He is perhaps better known for inventing the catadioptric (reflective/refractive) Fresnel lens and for pioneering the use of "stepped" lenses to extend the visibility of lighthouses, saving countless lives at sea. The simpler dioptric (purely refractive) stepped lens, first proposed by Count Buffon and independently reinvented by Fresnel, is used in screen magnifiers and in condenser lenses for overhead projectors. Fresnel gave the first satisfactory explanation of diffraction by straight edges, including the first satisfactory wave-based explanation of rectilinear propagation. By further supposing that light waves are purely transverse, Fresnel explained the nature of polarization. He then worked on double refraction. Fresnel had a lifelong battle with tuberculosis, to which he succumbed at the age of 39. He lived just long enough to receive recognition from his peers, including (on his deathbed) the Rumford Medal of the Royal Society, and his name is ubiquitous in the modern terminology of optics and waves. After the wave theory of light was subsumed by Maxwell's electromagnetic theory in the 1860s, some attention was diverted from the magnitude of Fresnel's contribution. In the period between Fresnel's unification of physical optics and Maxwell's wider unification, a contemporary authority, Humphrey Lloyd, described Fresnel's transverse-wave theory as "the noblest fabric which has ever adorned the domain of physical science, Newton's system of the universe alone excepted".

Antonio José de Sucre y Alcalá (Spanish pronunciation: [anˈtonjo xoˈse ðe ˈsukɾej alkaˈla] ; 3 February 1795 – 4 June 1830), known as the "Gran Mariscal de Ayacucho" (English: "Grand Marshal of Ayacucho"), was a Venezuelan general and politician who served as the president of Bolivia from 1825 to 1828. A close friend and associate of Simón Bolívar, he was one of the primary leaders of South America's struggle for independence from the Spanish Empire. Born to an aristocratic family in Cumaná, Sucre joined the revolt against Spanish rule in 1814 and quickly established himself as a highly capable military leader. In 1822, he led the Patriot forces to triumph at the Battle of Pichincha and liberated Quito, from which modern Ecuador would eventually emerge. As Bolívar's chief lieutenant, he went on to score a decisive victory over the Spanish Royalist army at the Battle of Ayacucho in 1824, which effectively secured the independence of Peru. Afterwards he moved into Upper Peru, pacified the Royalist resistance and set up an administration on Bolívar's orders. The region achieved independence as the Bolivia, and Sucre was inaugurated as president of the new republic after Bolívar passed on the duty. Sucre's tenure as president was beset by difficulties, and opposition to his rule mounted as the populace turned against Bolívar and his followers. He was forced to resign in 1828, but was recalled to military duty on the outbreak of the Gran Colombia–Peru War, in which he commanded Colombian forces and fought the Peruvian invaders to a standstill. He was assassinated in Berruecos, Colombia in 1830, and the identity of the conspirators remains a subject of historical speculation.

The Texas Revolution (October 2, 1835 – April 21, 1836) was a rebellion by Anglo-American immigrants as well as Hispanic Texans (known as Texians and Tejanos respectively) against the centralist government of Mexico in the Mexican state of Coahuila y Tejas. Although the uprising was part of a larger revolt that included other provinces opposed to the regime of President Miguel Barragán and General Antonio López de Santa Anna, the Mexican government believed the United States had instigated the Texas insurrection with the goal of annexation. The Mexican Congress passed the Tornel Decree, declaring that any foreigners fighting against Mexican troops "will be deemed pirates and dealt with as such, being citizens of no nation presently at war with the Republic and fighting under no recognized flag". Only the province of Texas succeeded in breaking with Mexico, establishing the Republic of Texas. It was eventually annexed by the United States about a decade later. The revolution began in October 1835, after a decade of political and cultural clashes between the Mexican government and the large and growing population of Anglo-American settlers in Texas. The Mexican government had become increasingly centralized, stripping Texas of its autonomy. The rights of its citizens had become further curtailed in turn, particularly regarding immigration from the United States, and the holding of slaves as property. Mexico had officially abolished slavery in 1829, but had made an exemption for Texas, however this exemption was not constitutionalized, which made many slave owners in Texas still feel unsatisfied. Although slavery is not mentioned explicitly in the Texas Declaration of Independence, the ownership of human beings in bondage as property was of great importance to many of the settlers. Texians and Tejanos disagreed on whether the ultimate goal was independence or a return to the Mexican Constitution of 1824. While delegates at the Consultation (provisional government) debated the war's motives, Texians and a flood of volunteers from the United States defeated the small garrisons of Mexican soldiers by mid-December 1835. The Consultation declined to declare independence and installed an interim government, whose infighting led to political paralysis and a dearth of effective governance in Texas. An ill-conceived proposal to invade Matamoros siphoned much-needed volunteers and provisions from the fledgling Texian Army. In March 1836, a second political convention declared independence and appointed leadership for the new Republic of Texas. Determined to avenge Mexico's honor, Santa Anna vowed to personally retake Texas. His Army of Operations entered Texas in mid-February 1836 and found the Texians completely unprepared. Mexican general José de Urrea led a contingent of troops on the Goliad Campaign up the Texas coast, defeating all Texian troops in his path and executing most of those who surrendered. Santa Anna led a larger force to San Antonio de Béxar (or Béxar), where his troops defeated the Texian garrison in the Battle of the Alamo, killing almost all of the defenders. A newly created Texian army under the command of Sam Houston was constantly on the move, while terrified civilians fled with the army, in a melee known as the Runaway Scrape. On March 31, Houston paused his men at Groce's Landing on the Brazos River, and for the next two weeks, the Texians received rigorous military training. Becoming complacent and underestimating the strength of his foes, Santa Anna further subdivided his troops. On April 21, Houston's army staged a surprise assault on Santa Anna and his vanguard force at the Battle of San Jacinto. The Mexican troops were quickly routed, and vengeful Texians executed many who tried to surrender. Santa Anna was taken hostage; in exchange for his life, he ordered the Mexican army to retreat south of the Rio Grande. The Texians forced Santa Anna to sign the Treaty of Velasco, which gave Texas its independence. However, Mexico refused to recognize the Republic of Texas, and intermittent conflicts between the two countries continued into the 1840s. The annexation of Texas as the 28th state of the United States in 1845 led directly to the Mexican–American War.

YMCA is a worldwide youth organization based in Vernier, Canton of Geneva, Switzerland, with more than 64 million beneficiaries in 120 countries. It has nearly 90,000 staff, some 920,000 volunteers and 12,000 branches worldwide. It was founded in London on 6 June 1844 by George Williams as the Young Men's Christian Association. The organization's stated aim is to put Christian values into practice by developing a healthy body, mind, and spirit.

Iran, officially the Islamic Republic of Iran, and historically known as Persia, is a country in West Asia. It borders Iraq to the west; Turkey, Azerbaijan, and Armenia to the northwest; the Caspian Sea to the north, Turkmenistan to the northeast; Afghanistan to the east; Pakistan to the southeast; and the Gulf of Oman and the Persian Gulf to the south. With a population of over 92 million, Iran ranks 17th globally in both geographic size and population. It is divided into five regions with 31 provinces. Tehran is the nation's capital and largest city and serves as its primary economic center.

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 Southern 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 as president in 1860 and the growing abolitionist movement in the North. The war ended with a Union victory, dissolution of the Confederacy and the national abolition of slavery, freeing four million African Americans. Decades of controversy over slavery came to a head when 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 Confederate States seized United States forts and other federal assets located in the South. The war began on April 12, 1861, when the Confederate States 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 Confederate States 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 Confederate States into two at the Mississippi River, while Confederate general Robert E. Lee's incursion north failed at the Battle of Gettysburg. Union 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 Union blockade on Confederate ports, the Union army had marshaled resources and also had the manpower to attack the Confederate States army from every 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 American South's infrastructure had been destroyed. The Confederate States completely collapsed, the ratified 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 black slaves. The war has been one of the most extensively studied, talked and written about episodes in the history of the United States. It remains the subject of cultural and historiographical debate. 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 advance technology and extreme brutality of the American Civil War was foreshadowed in the upcoming ("First" and "Second") World Wars.

Traffic lights, traffic signals, or stoplights – also known as robots in South Africa, Zambia, and Namibia – are signaling devices positioned at road intersections, pedestrian crossings, and other locations to control the flow of traffic. Traffic lights usually consist of three signals, conveying meaningful information to road users through colors and symbols, including arrows and bicycle symbols. The usual traffic light colors are red to stop traffic, amber to signal a change, and green to allow traffic to proceed. These are arranged vertically or horizontally in that order. Although this is internationally standardized, variations in traffic light sequences and laws exist on national and local scales. Traffic lights were first introduced in December 1868 on Parliament Square in London to reduce the need for police officers to control traffic. Since then, electricity and computerized control have advanced traffic light technology and increased intersection capacity. The system is also used for other purposes, including the control of pedestrian movements, variable lane control (such as tidal flow systems or smart motorways), and railway level crossings.

Louisiana is a state in the Deep South and South Central regions of the United States. It is bordered by Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25th in population, with roughly 4.6 million residents. Reflecting its French heritage, Louisiana is the only U.S. state with political subdivisions termed parishes, which are equivalent to counties, making it one of only two U.S. states not subdivided into counties. Baton Rouge is the state's capital, and New Orleans, a French Louisiana region, is its most populous city with a population of about 363,000 people. Louisiana has a coastline with the Gulf of Mexico to the south; a large part of its eastern boundary is demarcated by the Mississippi River; and the mouth of the Mississippi or delta defines much of its lower topography.

The National Assembly bombing was a bomb attack carried out on 9 December 1893 in Paris by the anarchist militant Auguste Vaillant. Acting in reaction to other events of the Ère des attentats, literally, "Era of Attacks", (1892–1894), such as the execution of Ravachol, the militant carefully prepared a bomb and managed to enter the galleries of the French National Assembly. He then threw it towards the deputies but was hindered by the arm of another spectator, which caused his attempt to fail. The bomb exploded, killing no one but slightly injuring several people – including Vaillant himself. The session at the National Assembly continued without interruption after the attack, while Vaillant was arrested later that day. Although the attack was a failure, it illustrated the opposition of anarchists to the French Republic and triggered two kinds of developments. On the one hand, the political authorities used it to push for the rapid adoption of the first two lois scélérates ('villainous laws') in December 1893. The first targeted press freedom, creating the category of incitement to terrorism and undermining the presumption of innocence. The second concerned criminal associations, making any terrorist project punishable, even if the act was not committed. On the other hand, the passing of the lois scélérates and the execution of Vaillant only heightened tensions during this period, pushing Émile Henry and Désiré Pauwels to commit their attacks in revenge – since Vaillant had become a martyr among anarchists. French President Sadi Carnot, who refused to grant his pardon to Vaillant, was assassinated a few months later. The French press, particularly Le Petit Journal, seized upon the affair to delegitimize the actions of the anarchist and reinforce the republican narrative of the events. This bombing, along with other attacks during the Era of Attacks, marked an early shift in terrorist strategy: instead of targeting specific individuals, it focused on symbolic locations—in this case, the National Assembly as a stand-in for a precise human target. This shift became a hallmark of modern terrorism but was poorly understood by contemporaries.

The 1905 French law on the Separation of the Churches and State (French: Loi du 9 décembre 1905 concernant la séparation des Églises et de l'État) was passed by the Chamber of Deputies on 3 July 1905. Enacted during the Third Republic, it established state secularism in France. At the time, France was governed by the Bloc des gauches (Left Coalition) led by Émile Combes. The law was based on three principles: the neutrality of the state, the freedom of religious exercise, and public powers related to the church. This law is seen as the backbone of the French principle of laïcité (secularism). It is, however, not applicable in Alsace and Moselle, which were part of Germany when it was enacted.

The Cross Mountain Mine disaster was a coal mine explosion that occurred on December 9, 1911, near the community of Briceville, Tennessee, in the southeastern United States. In spite of a well-organized rescue effort led by the newly created Bureau of Mines, 84 miners died in the disaster. The cause of the explosion was the ignition of dust and methane gas released by a roof fall. Miners would use open oil lamps to provide a light source down in the mines. At least 22 of those killed were buried in a circular memorial known as the Cross Mountain Miners' Circle, which is now listed on the National Register of Historic Places.

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 caused 15 to 22 million deaths, including those resulting from war crimes and genocides. The war also contributed to the spread of the Spanish flu pandemic. The conflict saw important developments in weaponry, including machine guns, artillery, aircraft, chemical weapons, and tanks.

The Kingdom of Romania was a constitutional monarchy that existed from 25 March [O.S. 13 March] 1881 with the crowning of prince Karl of Hohenzollern-Sigmaringen as King Carol I, until 30 December 1947 with the abdication of King Michael I and the Romanian Parliament proclamation of the Romanian People's Republic.

The December 9th Movement was a mass protest led by students in Beiping on December 9, 1935, to demand that the Chinese government actively resist Japanese aggression.

Walter William Liggett (February 14, 1886 – December 9, 1935), was an American journalist who worked at several newspapers in New York City, including the New York Times, The Sun, New York Post, and the New York Daily News. In the Twin Cities during the 1930s, Liggett worked as an investigative journalist and editor of the newspaper Midwest American. He specialized in exposés of Minneapolis and Saint Paul organized crime and their connections to corrupt politicians. He wrote novels including The River Riders. Subjects he wrote about included the timber business in northern Minnesota and the Alaskan gold rush events. He became involved in politics and covered political corruption. He was murdered as a result.

The Second Sino-Japanese War was fought between the Republic of China and the Empire of Japan and its puppet states between 1937 and 1945, following a period of conflict localized to Manchuria that started in 1931. It is often regarded as the beginning of World War II in Asia, as the wars became heavily intertwined after Japan attacked the United States. It was the largest Asian war in the 20th century. On 18 September 1931, the Japanese staged the Mukden incident, a false flag event fabricated to justify their invasion of Manchuria and establishment of the puppet state of Manchukuo. This is sometimes marked as the beginning of the war. From 1931 to 1937, China and Japan engaged in skirmishes, including in Shanghai and in Northern China. Nationalist and Chinese Communist Party (CCP) forces, respectively led by Chiang Kai-shek and Mao Zedong, had fought each other in the Chinese Civil War since 1927. In late 1933, Chiang Kai-shek encircled the Chinese Communists in an attempt to finally destroy them, forcing the Communists into the Long March, resulting in the Communists losing around 90% of their men. As a Japanese invasion became imminent, Chiang eventually formed a United Front with the Communists in 1936, a process that was hastened by the Xi'an Incident. The war is considered to have begun on 7 July 1937 after the Marco Polo Bridge incident near Beijing, which escalated into full-scale Japanese invasion of the rest of China. Following the protracted Battle of Shanghai, the Japanese captured the capital of Nanjing in 1937 and perpetrated the Nanjing Massacre. After failing to stop the Japanese capture of Wuhan in 1938, China's de facto capital at the time, the Nationalist government relocated to Chongqing in the Chinese interior. After the Sino-Soviet Non-Aggression Pact, Soviet aid bolstered the National Revolutionary Army and Air Force. By 1939, after Chinese victories at Changsha and with Japan's lines of communication stretched deep into the interior, the war reached a stalemate. The Japanese were unable to defeat CCP forces in Shaanxi, who waged a campaign of sabotage and guerrilla warfare. In November 1939, Nationalist forces launched a large scale winter offensive, and in August 1940, CCP forces launched the Hundred Regiments Offensive in central China. In retaliation, Japanese forces implemented massive scorched earth policies in North and Central China, killing millions of civilians. In April 1941, Soviet aid was halted with the Soviet–Japanese Neutrality Pact. In December 1941, Japan launched a surprise attack on Pearl Harbor and declared war on the United States and the United Kingdom. The US increased its aid to China under the Lend-Lease Act, becoming its main financial and military supporter. The British Empire supported the Chinese forces against Japan by sending supplies through the Burma Road, linking British colonies in India and Burma to China. Chinese forces also fought with British Empire forces against the Japanese in the Burma campaign to restore Allied usage after the Japanese occupied most of the Burma Road. With Burma cut off, the United States Army Air Forces airlifted material over the Himalayas. In 1944, Japan launched Operation Ichi-Go, the invasion of Henan and Changsha. In 1945, the Chinese Expeditionary Force resumed its advance in Burma and completed the Ledo Road linking India to China. China launched large counteroffensives in South China, repulsed a failed Japanese invasion of West Hunan, and recaptured Japanese occupied regions of Guangxi. Japan formally surrendered on 2 September 1945, following the atomic bombings of Hiroshima and Nagasaki, Soviet declaration of war and subsequent invasion of Manchuria, Inner Mongolia and Korea. The war resulted in the deaths of around 20 million people, mostly Chinese civilians. Japan carried out the largest attacks in the history of biological warfare, causing at least 200,000 deaths, and used chemical weapons including lethal blister agents. China was recognized as one of the Big Four Allied powers in World War II and one of the "Four Policemen", which formed the foundation of the United Nations. It regained Taiwan and became one of the five permanent members of the United Nations Security Council. The Japanese surrender ceremony that ended World War II in China, occurred in Nanjing on 9 September 1945. The forces of the Imperial Japanese Army agreed with the Allies terms to cease all armed conflict in the Pacific. During the 15-minute ceremony, General Yasuji Okamura, Commander-in-Chief of the Chinese Expeditionary Force of the Imperial Japanese Army, signed the surrender document which was written in both Japanese and Chinese. The unconditional surrender was overseen and accepted by Kuomintang General He Yingqin, the Chinese representative of Allies of World War II and the commander-in-chief of the Republic of China National Revolutionary Army and British Major-General Eric Hayes. The Chinese Civil War resumed in 1946, ending with a communist victory and the Proclamation of the People's Republic of China in 1949, while the government of the Republic of China relocated to Taiwan.

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 Republic of China established its governance over mainland China on 1 January 1912 following the Xinhai Revolution, which overthrew the Manchu-led Qing dynasty and ended China's imperial history. The Beiyang government in Beijing was the internationally recognized government of the ROC from 1912 to 1928, with regional warlords occupying parts of the country after the death of Beiyang leader Yuan Shikai in 1916. In 1926, the Kuomintang (KMT) launched the Northern Expedition, which eventually reunified the country in 1928. The KMT established the Nationalist government and governed the ROC as a one-party state with Nanjing as the capital. In 1949, the KMT was defeated in the Chinese Civil War by the Chinese Communist Party (CCP) and the ROC government retreated to Taiwan, where it remains to this date. The ROC is recorded as a founding member of both the League of Nations and the United Nations. It claimed 11.4 million km2 (4.4 million sq mi) of territory, and its population of 541 million in 1949 made it the most populous country in the world.

The subsequent Nuremberg trials (also Nuremberg Military Tribunals; 1946–1949) were twelve trials for war crimes committed by the leaders of Nazi Germany (1933–1945). The Nuremberg Military Tribunals occurred after the Nuremberg trials, held by the International Military Tribunal, which concluded in October 1946. The subsequent Nuremberg trials were held by U.S. civilian courts and dealt with the cases of crimes against humanity committed by the business community of Nazi Germany, specifically the crimes of using slave labor and plundering occupied countries, and the war crime cases of Wehrmacht officers who committed atrocities against Allied prisoners of war, partisans, and guerrillas.

The Constituent Assembly of India was the legislature of the Dominion of India from its independence in August 1947 until 1950, when India became a republic. Best known for its creation of the Indian constitution, its members were mostly elected from the provinces of British India—with a third being nominated by princely states. First formed in December 1946 as an advisory body aimed at drafting a constitution for a united and independent India eighteen months before the original June 1948 deadline for independence, it was given sovereign powers to legislate for the Dominion of India (excluding princely states that refused to accede to the Dominion) following partition and independence on 15 August 1947 and the abolition of the Imperial Legislative Council under the provisions of the Indian Independence Act 1947. Its members continued as part of the provisional unicameral Parliament of India from the adoption of the Indian constitution in 1950 until the first bicameral Parliament convened following elections in May 1952.

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.

McCarthyism is a political practice defined by the accusation and investigation of left-wing individuals of communist and Soviet influence on American institutions and of Soviet espionage in the United States during the late 1940s through the 1950s, heavily associated with the McCarthy era. After the mid-1950s, U.S. senator Joseph McCarthy, who had spearheaded the campaign, gradually lost his public popularity after several of his accusations were found to be false. The U.S. Supreme Court under Chief Justice Earl Warren made a series of rulings on civil and political rights that overturned several key laws and legislative directives, and helped bring an end to the Second Red Scare.

Trans-Canada Air Lines Flight 810-9 was a Canadair North Star on a scheduled flight from Vancouver to Calgary. The plane crashed into Mount Slesse near Chilliwack, British Columbia, Canada, on 9 December 1956 after encountering severe icing and turbulence over the mountains. All 62 people on board died, making it one of the deadliest airline crashes ever as of that date; it still ranks as the sixth deadliest air disaster in Canadian history.

PJSC Aeroflot – Russian Airlines, commonly known as Aeroflot, is the flag carrier and the largest airline of Russia. Aeroflot is headquartered in the Central Administrative Okrug, Moscow, with its hub being Sheremetyevo International Airport. The Federal Agency for State Property Management, an agency of the Government of Russia, owns 73.77% of the company, with the rest of the shares being public float.

Coronation Street is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960. The programme centres on a cobbled, terraced street in the fictional town of Weatherfield in Greater Manchester. The location was itself based on Salford, the hometown of the show's first screenwriter and creator, Tony Warren.

Tanganyika was a sovereign state, comprising the mainland part of present-day Tanzania, that existed from 1961 until 1964. It first gained independence from the United Kingdom on 9 December 1961 as a Commonwealth realm headed by Queen Elizabeth II before becoming a republic within the Commonwealth of Nations as the Republic of Tanganyika a year later. After signing the Articles of Union on 22 April 1964 and passing an Act of Union on 25 April, Tanganyika officially joined with the People's Republic of Zanzibar to form the United Republic of Tanganyika and Zanzibar on Union Day, 26 April 1964. The new state changed its name to the United Republic of Tanzania within a year.

The Kecksburg UFO incident occurred on December 9, 1965, at Kecksburg, Pennsylvania, United States, when a fireball was reported by citizens of six U.S. states and Canada over Detroit, Michigan, and Windsor, Ontario. Astronomer John Balafoutas said it was likely to have been a meteor bolide burning up in the atmosphere and descending at a steep angle. NASA released a statement in 2005 reporting that experts had examined fragments from the area and determined they were from a Soviet satellite, but that records of their findings were lost in 1987. NASA responded to court orders and Freedom of Information Act requests to search for the records. The incident gained wide notoriety in popular culture and ufology, with speculation ranging from extraterrestrial craft to debris from the Soviet space probe Kosmos 96, and is often called "Pennsylvania's Roswell".

Douglas Carl Engelbart was an American engineer, inventor, and a pioneer in many aspects of computer science. He is best known for his work on founding the field of human–computer interaction, particularly while at his Augmentation Research Center Lab in SRI International, which resulted in creation of the computer mouse, and the development of hypertext, networked computers, and precursors to graphical user interfaces. These were demonstrated at The Mother of All Demos in 1968. Engelbart's law, the observation that the intrinsic rate of human performance is exponential, is named after him.

William Pierce Rogers was an American politician, diplomat, and attorney. A member of the Republican Party, he served as Attorney General in the administration of Dwight D. Eisenhower and as U.S. Secretary of State in the administration of Richard Nixon.

The India–Pakistan war of 1971, also known as the third Indo-Pakistani war, was a military confrontation between India and Pakistan that occurred during the Bangladesh Liberation War in East Pakistan from 3 December 1971 until the Pakistani capitulation in Dhaka on 16 December 1971. The war began with Pakistan's Operation Chengiz Khan, consisting of preemptive aerial strikes on eight Indian air stations. The strikes led to India declaring war on Pakistan, marking their entry into the war for East Pakistan's independence, on the side of Bengali nationalist forces. India's entry expanded the existing conflict with Indian and Pakistani forces engaging on both the eastern and western fronts.

Smallpox was an infectious disease caused by the variola virus, which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization certified the global eradication of the disease in 1980, making smallpox the only human disease to have been eradicated.

Israel and the Palestinians are engaged in an ongoing military and political conflict about land and self-determination within the former territory of Mandatory Palestine. Key aspects of the conflict have included Palestinian refugees, the Israeli occupation of the West Bank and Gaza Strip, the status of Jerusalem, Israeli settlements, borders, security, water rights, the permit regime in the West Bank and in the Gaza Strip, Palestinian freedom of movement, and the Palestinian right of return.

Somalia, officially the Federal Republic of Somalia, is the easternmost country in continental Africa. Stretching across the Horn of Africa, it borders Ethiopia to the west, Djibouti to the northwest, Kenya to the southwest, the Gulf of Aden to the north, and the Indian Ocean to the east. Somalia has the longest coastline on Africa's mainland. Somalia has an estimated population over 19 million, of which 2.7 million live in the capital and largest city, Mogadishu. As one of Africa's most ethnically homogeneous countries, around 85% of its residents are ethnic Somalis. The official and national language of the country is Somali, and Arabic is recognised as a second language. The overwhelming majority of the population are Sunni Muslims.

In Canada, topfreedom has primarily been an attempt to combat the interpretation of indecency laws that considered a woman's breasts to be indecent, and therefore their exhibition in public an offence. In British Columbia, it is a historical issue dating back to the 1930s and the public protests against the materialistic lifestyle held by the radical religious sect of the Freedomites, whose pacifist beliefs led to their exodus from Russia to Canada at the end of the 19th century. The Svobodniki became famous for their public nudity: primarily for their nude marches in public and the acts of arson committed also in the nude.

The 2003 Mokhovaya Street bombing was the 9 December 2003 suicide bombing on Mokhovaya Street in Moscow.

The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit crew and cargo from 1981 to 2011. Its official program name was carried over from the 1969 plan for the Space Transportation System (STS) of reusable spacecraft. Only the shuttle and supporting rockets were funded for development; a proposed nuclear lunar shuttle in the plan was canceled in 1972. It flew 135 missions and carried 355 astronauts from 16 countries, many on multiple trips.

The governor of Illinois is the head of government of Illinois, and the various agencies and departments over which the officer has jurisdiction, as prescribed in the state constitution. It is a directly elected position, votes being cast by popular suffrage of residents of the state. The governor is responsible for endorsing or vetoing laws passed by the Illinois General Assembly. The office also carries the power of pardon and commutation under state law. The governor is commander-in-chief of the state's land, air and sea forces when they are in state service. Illinois is one of 13 states that does not place a term limit for governor.

On 9 December 2012, a Learjet 25 business jet carrying five passengers including Mexican-American singer Jenni Rivera crashed south of Monterrey, Mexico, minutes after taking off from the city's international airport. All aboard, including two crew members, were killed.

The 2013 Bintaro rail crash occurred on 9 December 2013 when a KRL Commuterline train crashed into a Pertamina gasoline tanker at a railroad crossing in Bintaro, Jakarta, Indonesia on a Monday morning, causing at least one female-only carriage to overturn and burst into flames. At least 7 people were killed and another 63 were wounded in the crash.

Park Geun-hye is a South Korean politician who served as the 11th President of South Korea from 2013 until her removal from office in 2017. A member of the Grand National, Saenuri and Liberty Korea parties and the eldest daughter of the third president, Park Chung Hee, she was the first woman in the country and the first in East Asia to be elected as head of state. Park previously served as the acting first lady of South Korea under her father's presidency from 1974 until her father's assassination in 1979.

Madagali or Madagli is a town and local government area in Adamawa State, Nigeria, adjacent to the border with Cameroon.

The Marriage Amendment (Definition and Religious Freedoms) Act 2017 (Cth) is an act of the Parliament of Australia, which legalises same-sex marriage in Australia by amending the Marriage Act 1961 to allow marriage between two persons of marriageable age, regardless of their gender.

Whakaari / White Island, also known as White Island or Whakaari, is an active andesite stratovolcano situated 48 km (30 mi) from the east coast of the North Island of New Zealand, in the Bay of Plenty. The island covers an area of approximately 325 ha, which is just the peak of a much larger submarine volcano.

Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually defined as consisting of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama, and also, in specialized contexts, including Mexico. Within Central America is the Mesoamerican biodiversity hotspot, which extends from southern Mexico to southeastern Panama. Due to the presence of several active geologic faults and the Central America Volcanic Arc, seismic activity in the region, such as volcanic eruptions and earthquakes, is high, which has caused death, injury, and property damage.