September 18 in History

Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in the Roman Empire, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire. He founded the city of Constantinople (now Istanbul) and made it the capital of the Empire, which it remained for over a millennium. Born in Naissus, a city located in the province of Moesia Superior (now Niš, Serbia), Constantine was the son of Flavius Constantius, a Roman army officer from Moesia Superior, who would become one of the four emperors of the Tetrarchy. His mother, Helena, was a Greek woman of low birth, probably from Bithynia. Later canonised as a saint, she is credited for the conversion of her son in some traditions, though others believe that Constantine converted her. He served with distinction under emperors Diocletian and Galerius. He began his career by campaigning in the eastern provinces against the Persians, before being recalled to the west in AD 305 to fight with his father in the province of Britannia. After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum (York, England). He eventually emerged victorious in the civil wars of the Tetrarchy against the emperors Maxentius and Licinius to become the sole ruler of the Roman Empire by 324. Upon his accession, Constantine enacted many reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation, he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. He disbanded the Praetorian Guard, which had supported Maxentius. The Roman army was reorganised to consist of mobile units (comitatenses), often around the emperor, to serve on campaigns against external enemies or Roman rebels, and frontier-garrison troops (limitanei) who could counter barbarian raids but were less and less effective against full-scale barbarian invasions. Constantine pursued campaigns against the tribes on the Roman frontiers—such as the Franks, the Alemanni, the Goths, and the Sarmatians—and resettled territories abandoned by his predecessors during the Crisis of the Third Century with citizens of Roman society. Although Constantine lived much of his life as a pagan, he later became a catechumen, as he began to favour Christianity in 312, finally being baptised by Eusebius of Nicomedia, an Arian bishop. He played an influential role in the proclamation of the Edict of Milan in 313, which legalised Christianity in the Roman Empire. He convoked the First Council of Nicaea in 325, which produced the Christian statement of belief known as the Nicene Creed. On his orders, the Church of the Holy Sepulchre was built at the site claimed to be the tomb of Jesus in Jerusalem and was deemed the holiest place in Christendom. He has historically been referred to as the "First Christian Emperor" but while he did favour the Christian Church, some modern scholars debate his beliefs and even his comprehension of Christianity. He is venerated as a saint in Eastern Christianity and parts of Western Christianity, and he did much to push Christianity towards the mainstream of Roman culture. The age of Constantine marked a distinct epoch in the history of the Roman Empire and a pivotal moment in the evolution from classical antiquity to the Middle Ages. He built a new imperial residence in the city of Byzantium, which was officially renamed New Rome, while also taking on the name Constantinople in his honour. It subsequently served as the capital of the empire for more than a thousand years—with the Eastern Roman Empire for most of that period commonly referred to retrospectively as the Byzantine Empire in English. In leaving the empire to his sons and other members of the Constantinian dynasty, Constantine's immediate political legacy was the replacement of Diocletian's Tetrarchy with the principle of dynastic succession. His memory was held in high regard during the lifetime of his children and for centuries after his reign. The medieval church held him up as a paragon of virtue, while secular rulers invoked him as a symbol of imperial legitimacy. The rediscovery of anti-Constantinian sources in the early Renaissance engendered more critical appraisals of his reign, with modern and contemporary scholarship often seeking to balance the extremes of earlier accounts.

Harald Sigurdsson (Old Norse: Haraldr Sigurðarson; c. 1015 – 25 September 1066), also known as Harald Hardrada or Harald III, was King of Norway from 1046 to 1066. He unsuccessfully claimed the Danish throne until 1064 and the English throne in 1066. Before becoming king, Harald spent 15 years in exile as a mercenary and military commander in Kievan Rus' and chief of the Varangian Guard in the Byzantine Empire. In his chronicle, Adam of Bremen called him the "Thunderbolt of the North". In 1030, the fifteen-year-old Harald fought in the Battle of Stiklestad alongside his half-brother Olaf Haraldsson. Olaf sought to reclaim the Norwegian throne, which he had lost to Danish king Cnut two years previously. Olaf and Harald were defeated by forces loyal to Cnut, and Harald was forced into exile to Kievan Rus'. Thereafter, he was in the army of Grand Prince Yaroslav the Wise, becoming captain, until he moved on to Constantinople with his companions around 1034. In Constantinople, he rose quickly to become the commander of the Byzantine Varangian Guard, seeing action on the Mediterranean Sea, in Asia Minor, Sicily, possibly in the Holy Land, Bulgaria and in Constantinople itself, where he became involved in the imperial dynastic disputes. Harald amassed wealth whilst in the Byzantine Empire, which he shipped to Yaroslav in Kievan Rus' for safekeeping. In 1042, he left the Byzantine Empire, returning to Kievan Rus' to prepare to reclaim the Norwegian throne. In his absence the Norwegian throne had been restored from the Danes to Olaf's illegitimate son Magnus the Good. In 1046, Harald joined forces with Magnus's rival in Denmark, the pretender Sweyn II of Denmark, raiding the Danish coast. Magnus, unwilling to fight his uncle, agreed to share the kingship with Harald, since Harald in turn would share his wealth with him. The co-rule ended abruptly the next year as Magnus died: Harald became the sole ruler of Norway. Domestically, Harald crushed opposition, and outlined the unification of Norway. Harald's reign was one of relative peace and stability, and he instituted a coin economy and foreign trade. Seeking to restore Cnut's "North Sea Empire", Harald claimed the Danish throne, and spent nearly every year until 1064 raiding the Danish coast and fighting his former ally, Sweyn. Although the campaigns were successful, he was never able to conquer Denmark. Not long after Harald had renounced his claim to Denmark, the former earl of Northumbria, Tostig Godwinson, brother of English king Harold Godwinson, pledged his allegiance to Harald, inviting him to claim the English throne. Harald assented, invading northern England with 10,000 troops and 300 longships in September 1066, defeating the English regional forces of Northumbria and Mercia in the Battle of Fulford near York on 20 September. Harald was defeated and killed in a surprise attack by Harold Godwinson's forces in the Battle of Stamford Bridge on 25 September, which wiped out his army. Historians often consider Harald's death the end of the Viking Age.

Philip II (21 August 1165 – 14 July 1223), also known as Philip Augustus (French: Philippe Auguste), was King of France from 1180 to 1223. His predecessors had been known as kings of the Franks (Latin: rex Francorum), but from 1190 onward, Philip became the first French monarch to style himself "King of France" (rex Francie). The only son of King Louis VII and his third wife, Adela of Champagne, he was originally nicknamed 'God-given' (Dieudonné) because he was a first son and born late in his father's life. Philip was given the epithet "Augustus" by the chronicler Rigord for having extended the crown lands of France so remarkably. After decades of conflicts with the House of Plantagenet, Philip succeeded in putting an end to the Angevin Empire by defeating a coalition of his rivals at the Battle of Bouvines in 1214. This victory had a lasting impact on western European politics: the authority of the French king became unchallenged, while John, King of England, was forced by his barons to assent to Magna Carta and deal with a rebellion against him aided by Philip's son Louis, the First Barons' War. The military actions surrounding the Albigensian Crusade helped prepare the expansion of France southward. Philip did not participate directly in these actions, but he allowed his vassals and knights to help carry them out. Philip transformed France into the most prosperous and powerful country in Europe. He checked the power of the nobles and helped the towns free themselves from seigneurial authority, granting privileges and liberties to the emergent bourgeoisie. He built a great wall around Paris, "the Wall of Philip II Augustus", re-organised the French government, and brought financial stability to his country.

The Thirteen Years' War (German: Dreizehnjähriger Krieg; Polish: wojna trzynastoletnia), also called the War of the Cities, was a conflict fought in 1454–1466 between the Prussian Confederation, allied with the Crown of the Kingdom of Poland, and the State of the Teutonic Order. After the defeat suffered by the Teutonic Order at the Battle of Grunwald (Tannenberg) in 1410 and the ensuing political, military and economic problems, the state was rife with internal conflict between the ruling Order and the local Prussian nobility. Eventually, this tension led to an uprising by the Prussian Confederation representing the Prussian nobility and cities, who sought the protection of the Polish King Casimir IV Jagiellon. Once the King granted his assent, war broke out between the Prussian Confederation, supported by Poland, and the proponents of Teutonic Knight rule. The Thirteen Years' War ended in the victory of the Prussian Confederation and Poland and in the Second Peace of Thorn. The Teutonic Order became a Polish fief and its Grand Masters had to commit to homage to the Polish King within 6 months of acquiring power. This was honored for approximately the next two centuries with tensions rising seldomly during this period. The Teutonic Order also returned Pomerelia to Poland after nearly 150 years and ceded the Prince-Bishopric of Warmia, which together formed Royal Prussia, as both lands fell under direct rule of the Polish King. Tension quickly flared up afterward, and this was soon followed by the War of the Priests (1467–1479), a drawn-out dispute over the independence of Warmia, in which the Knights sought revision of the Peace.

Giovanni Battista Pastene (1507–1580) was a Genoese maritime explorer who, while in the service of the Spanish crown, explored the coasts of Panama, Colombia, Ecuador, Peru and Chile as far south as the archipelago of Chiloé.

The Treaty of Belgrade, also known as the Belgrade Peace, was a peace treaty between the Habsburg Monarchy and Ottoman Empire, that was signed on September 18, 1739, in Belgrade (modern Serbia), thus ending the Austro-Turkish War (1737–1739). Agreed territorial changes were substantial, and also favorable for the Ottoman side, since Habsburgs had to cede three regions: the Banat of Craiova (modern Oltenia), the Kingdom of Serbia with Belgrade, and Bosnian section of Posavina, thus placing the newly defined Habsburg-Ottoman border on the rivers Sava and Danube.

The French and Indian War (1754–1763) was a conflict in North America between Great Britain and France, along with their respective Indigenous allies. Historians generally consider it part of the global Seven Years' War, which lasted from 1756 to 1763, although in the United States it is often viewed as a distinct conflict unassociated with any larger European war.

The Royal Opera House (ROH) is a theatre in Covent Garden, central London. The building is often referred to as simply Covent Garden, after a previous use of the site. The ROH is the main home of The Royal Opera, The Royal Ballet, and the Orchestra of the Royal Opera House, which are known collectively as the Royal Ballet and Opera.

Tiffany & Co. is an American luxury jewelry and specialty design house owned by the French conglomerate LVMH, and headquartered on Fifth Avenue in Manhattan. Tiffany is known for its luxury goods, particularly its sterling silver and diamond jewelry. These goods are sold at Tiffany stores, online, and through corporate merchandising. Its name and branding are licensed to Coty for fragrances and to the Franco-Italian company EssilorLuxottica for eyewear.

The Anti–Corn Law League was a successful political movement in Great Britain aimed at the abolition of the unpopular Corn Laws, which protected national farming interests by levying taxes on imported wheat, thus raising the price of bread at a time when factory-owners were trying to cut wages. The League was a middle-class nationwide organisation that held many well-attended rallies on the premise that a crusade was needed to convince parliament to repeal the corn laws. Its long-term goals included the removal of feudal privileges, which it denounced as impeding progress, lowering economic well-being, and restricting freedom. The League played little role in the final act in 1846, when Sir Robert Peel led the successful battle for repeal. However, its experience provided a model that was widely adopted in Britain and other democratic nations to demonstrate the organisation of a political pressure group with the popular base.

The Fugitive Slave Act or Fugitive Slave Law was a statute passed by the 31st United States Congress on September 18, 1850, as part of the Compromise of 1850 between Southern interests in slavery and Northern Free-Soilers. The Act was one of the most controversial elements of the 1850 compromise and heightened Northern fears of a slave power conspiracy. It required that all escaped slaves, upon capture, be returned to the slave-owner and that officials and citizens of free states had to cooperate. The Act contributed to the growing polarization of the country over the issue of slavery. It was one of the factors that led to the founding of the Republican Party and the start of the American Civil War.

The Second Opium War (simplified Chinese: 第二次鸦片战争; traditional Chinese: 第二次鴉片戰爭), also known as the Second Anglo-Chinese War or Arrow War, was fought between the United Kingdom and France against the Qing dynasty of China between 1856 and 1860. It was the second major conflict in the Opium Wars, which were fought over the right to import opium to China, and resulted in a second defeat for the Qing and the forced legalisation of the opium trade. It caused many Chinese officials to believe that conflicts with the Western powers were no longer traditional wars, but part of a looming national crisis. On 8 October 1856, Qing officials seized the Arrow, a British-registered cargo ship, and arrested its Chinese sailors. The British consul, Harry Parkes, protested, upon which the viceroy of Liangguang, Ye Mingchen, delivered most of the sailors to the British on 22 October, but refused to release the rest. The next day, British gunboats shelled the city of Canton. The British government decided to seek redress from China and dispatched a naval force led by Michael Seymour, and France joined in the action, citing as its reason the murder of a French missionary in China. After coordination with each other, the British and French stormed Canton in December 1857. Ye was captured and the governor of Guangdong surrendered. The alliance then moved north to demand a treaty from the Qing court, and on 20 May 1858, captured the Taku Forts, stormed Tianjin, and threatened the capital Beijing. The Qing asked for peace, and signed the Treaty of Tientsin with Great Britain and France in 1858. However, the Xianfeng Emperor refused to ratify the treaty, after which the Qing general Sengge Rinchen restarted the war with the British and French that month. Allied reinforcements sailed from Hong Kong, and his troops were defeated. As the alliance's forces advanced toward Beijing, Parkes and a number of British and French officers were captured as hostages, and some were tortured or murdered. These events prompted Lord Elgin to order his soldiers to loot and burn the Old Summer Palace as soon as they captured Beijing. The emperor and his entourage fled to Rehe, while Prince Gong stayed to conduct the negotiations, signing the Convention of Peking with the alliance on 24 October 1860, thus ratifying the Treaty of Tientsin and bringing the Second Opium War to an end. During and after the Second Opium War, the Qing government was also forced to sign treaties with Russia, such as the Treaty of Aigun and the Convention of Peking. As a result, China ceded more than 1.5 million square kilometres (0.58 million square miles) of territory to Russia in its north-east and north-west. With the conclusion of the war, the Qing government was able to concentrate on countering the Taiping Rebellion and maintaining its rule. Among other things, the Convention of Peking ceded the Kowloon Peninsula to the British as part of Hong Kong.

The unification of Italy, also known as the Risorgimento, was the 19th century political and social movement that in 1861 ended in the annexation of various states of the Italian Peninsula and its outlying isles to the Kingdom of Sardinia, resulting in the creation of the Kingdom of Italy. Inspired by the rebellions in the 1820s and 1830s against the outcome of the Congress of Vienna, the unification process was precipitated by the Revolutions of 1848, and reached completion in 1871 with the official designation of Rome as capital of Italy, following the capture of Rome in 1870.

The Confederate States of America (CSA), also known as the Confederate States or the Confederacy, was a republic in the Southern United States from 1861 to 1865, unrecognized as a sovereign nation by either foreign governments or the United States. The Confederacy was formed on February 8, 1861, by seven states that had seceded from the Union. The original seven were South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas; the additional four were Virginia, Arkansas, Tennessee, and North Carolina. These states fought against the United States during the American Civil War in the wake of the 1860 election of Abraham Lincoln as president, with the principal aim of safeguarding slavery amid fears of northern abolitionist influence and federal interference in slave property. The South also feared that Lincoln's insistence that slavery not be permitted to expand into the Western territories would result in the admission of additional free states and the eventual demise of slavery.

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

John Bell Hood (June 1 or June 29, 1831 – August 30, 1879) was a Confederate general during the American Civil War. Hood's education at the United States Military Academy led to a career as a junior officer in the infantry and cavalry of the antebellum U.S. Army in California and Texas. At the start of the Civil War, he offered his services to his adopted state of Texas. He achieved his reputation for aggressive leadership as a brigade commander in the army of Robert E. Lee during the Seven Days Battles in 1862, after which he was promoted to division command. He led a division under James Longstreet in the campaigns of 1862–63. At the Battle of Gettysburg, he was severely wounded, rendering his left arm mostly useless for the rest of his life. Transferred with many of Longstreet's troops to the Western Theater, Hood led a massive assault into a gap in the Union line at the Battle of Chickamauga but was wounded again, requiring the amputation of his right leg. Hood returned to field service during the Atlanta Campaign of 1864 and, at the age of 33, was promoted to temporary full general and command of the Army of Tennessee at the outskirts of Atlanta, making him the youngest soldier on either side of the war to be given command of an army. There, he dissipated his army in a series of unsuccessful assaults and was forced to evacuate the besieged city. Leading his men through Alabama and into Tennessee, his army was severely damaged in a massive frontal assault at the Battle of Franklin. He was decisively defeated at the Battle of Nashville by his former West Point instructor, Major General George Henry Thomas, after which he was relieved of command. Hood's impulsiveness led to high losses among the troops under his command, especially as he moved up in the Confederate ranks. Bruce Catton wrote that "the decision to replace Johnston with Hood was probably the single largest mistake that either government made during the war." After the war, Hood moved to Louisiana and worked as a cotton broker and in the insurance business. His business was ruined by a yellow fever epidemic in New Orleans during the winter of 1878–79. He succumbed to the disease, dying just days after his wife and oldest child, leaving ten destitute orphans.

The Nova Scotia House of Assembly (French: Assemblée législative de la Nouvelle-Écosse, or Legislative Assembly, is the deliberative assembly of the General Assembly of Nova Scotia, and together with the lieutenant governor of Nova Scotia makes up the Nova Scotia Legislature.

The Washburn Expedition of 1870 explored the region of northwestern Wyoming that two years later became Yellowstone National Park. Led by Henry D. Washburn and Nathaniel P. Langford, and with a U.S. Army escort headed by Lt. Gustavus C. Doane, the expedition followed the general course of the Cook–Folsom–Peterson Expedition made the previous year. During their explorations, members of the party made detailed maps and observations of the Yellowstone region, exploring numerous lakes, climbing several mountains, and observing wildlife. The expedition visited both the Upper and Lower Geyser Basins, and after observing the regularity of eruptions of one geyser, decided to name it Old Faithful, since it erupted about once every 74 minutes. One member of the expedition, Montana writer and lawyer Cornelius Hedges, later wrote a number of articles for a Helena, Montana-based newspaper, describing the things the expedition had witnessed. In discussions with other members of the party and in his writing for the newspaper, Hedges was a vocal supporter of setting aside the Yellowstone region as a National Park, an idea originally proposed by former acting Montana Territorial Governor Thomas Francis Meagher.

Jay Cooke & Company was a U.S. bank that operated from 1861 to 1873. Headquartered in Philadelphia, Pennsylvania, with branches in New York City and Washington, D.C., the bank helped underwrite the Union Civil War effort. It was the first "wire" brokerage house, pioneering the use of telegraph messages to confirm securities transactions with clients. The bank became overextended in the building of the Northern Pacific Railway and failed, contributing to the Panic of 1873.

The Pacific Exchange was an American regional stock exchange in California, from 1956 to 2006. Its main exchange floor and building were in San Francisco, California, with a branch building in Los Angeles, California. In 1882, the San Francisco Stock and Bond Exchange was founded; and in 1899 the Los Angeles Oil Exchange was founded. In 1956, these two exchanges merged to create the Pacific Coast Stock Exchange, with trading floors maintained in both cities. In 1973, it was renamed the Pacific Stock Exchange. The Pacific Exchange was bought by Archipelago Holdings in 2005, which merged with the New York Stock Exchange in 2006. Pacific Exchange equities and options trading now take place exclusively through the NYSE Arca platform.

The Fashoda Incident, also known as the Fashoda Crisis (French: Crise de Fachoda), was the climax of imperialist territorial disputes between Britain and France in East Africa, occurring between 10 July and 3 November 1898. A French expedition to Fashoda on the White Nile sought to gain control of the Upper Nile river basin and thereby exclude Britain from Sudan. The French party and a British-Egyptian force (outnumbering the French by 10 to 1) met on friendly terms. However, in Europe, it became a war scare. Both empires stood on the verge of war with heated rhetoric on both sides. Under heavy pressure, the French withdrew, ensuring Anglo-Egyptian control over the area.

The 1906 Hong Kong typhoon was a tropical cyclone that hit Hong Kong on 18 September 1906. The typhoon caused property damage exceeding a million pounds sterling, affected international trade, and took the lives of around 15,000 people.

George Owen Squier (March 21, 1865 – March 24, 1934) was an American general, scientist, and inventor best known for inventing and popularizing what today is called Muzak.

The Government of Ireland Act 1914 (4 & 5 Geo. 5. c. 90), also known as the Home Rule Act, and before enactment as the Third Home Rule Bill, was an Act passed by the Parliament of the United Kingdom intended to provide home rule (self-government within the United Kingdom) for Ireland. It was the third such bill introduced by a Liberal government during a 28-year period in response to agitation for Irish Home Rule. The Act was the first law ever approved by the Parliament of the United Kingdom that provided for a devolved government in any part of the UK proper (as opposed to colonial territories). However, the implementation of both it and the equally controversial Welsh Church Act 1914 was formally postponed for a minimum of twelve months with the beginning of the First World War. The continuation of the war beyond 1915 and subsequent developments in Ireland resulted in further postponements, meaning that the Act never became effective; it was finally superseded by a fourth home rule bill, enacted as the Government of Ireland Act 1920, which partitioned Ireland, creating Northern Ireland and Southern Ireland, both intended to have Home Rule.

The Saturday Evening Post is an American magazine published six times a year. It was first published in 1821, and published weekly from 1897 until 1963. It was published every other week until 1969. From the 1920s to the 1960s, it was one of the most widely circulated and influential magazines among the American middle class, with fiction, nonfiction, cartoons, and features that reached two million homes every week.

Frederick Douglass "Fritz" Pollard was an American professional football player and coach. In 1921, he became the first African-American head coach in the National Football League (NFL). Pollard and Bobby Marshall were the first two African-American players in the NFL in 1920. He is also recognized as the first Black quarterback in NFL history, playing the position for the Hammond Pros in 1923. Football pioneer Walter Camp called Pollard "one of the greatest runners these eyes have ever seen."

The Netherlands, also informally known as Holland, is a country in Northwestern Europe, with overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Netherlands. The Netherlands consists of twelve provinces and three overseas special municipalities. European Netherlands has land borders with Germany to the east and with Belgium to the south, and a coastline to the north and west. It shares maritime borders with the United Kingdom, Germany, and Belgium in the North Sea. The official language is Dutch, with West Frisian as a secondary official language in the province of Friesland. Dutch, English, and Papiamento are official in the Caribbean territories. People from the Netherlands are referred to as Dutch.

The Rif War was an anti-colonial war fought from 1921 to 1926 between the indigenous Berber tribes of the mountainous Rif region of northern Morocco and Spain.

The interwar Kingdom of Hungary, referred to retrospectively as the Regency and the Horthy era, existed as a country from 1920 to 1946 under the rule of Miklós Horthy, Regent of Hungary, who officially represented the Hungarian monarchy. In reality there was no king, and attempts by King Charles IV to return to the throne shortly before his death were prevented by Horthy.

The Military Government of Santo Domingo was a provisional military government established during the American occupation of the Dominican Republic that lasted from May 15, 1916 to September 18, 1924. The United States aimed to force the Dominicans to repay their large debts to European creditors, whose governments threatened military intervention. On May 13, 1916, Rear Admiral William B. Caperton forced the Dominican Republic's Secretary of War Desiderio Arias, who had seized power from Dominican President Juan Isidro Jimenes Pereyra, to leave Santo Domingo by threatening the city with naval bombardment.

The Great Miami Hurricane of 1926 was a large and intense tropical cyclone that devastated the Greater Miami area of Florida and caused catastrophic damage in the Bahamas and the U.S. Gulf Coast in September 1926, accruing a US$100 million damage toll. The devastation brought by the hurricane resulted in the end of Florida's land boom, and represented an early start to the Great Depression in the state. It has been estimated that a similar hurricane would cause about $235 billion in damage if it were to hit Miami in 2018.

CBS Broadcasting Inc. is an American commercial broadcast television network and the flagship property of the CBS Entertainment Group division of Paramount Skydance. It is one of Paramount Skydance's three flagship subsidiaries, along with Paramount Pictures and MTV.

Juan de la Cierva y Codorníu, 1st Count of la Cierva, was a Spanish civil engineer, pilot and a self-taught aeronautical engineer. His most famous accomplishment was the invention in 1920 of a rotorcraft called Autogiro, a single-rotor type of aircraft that came to be called autogyro in the English language. In 1923, after four years of experimentation, de la Cierva developed the articulated rotor, which resulted in the world's first successful flight of a stable rotary-wing aircraft, with his C.4 prototype.

The Mukden incident was a false flag event staged by Japanese military personnel as a pretext for the 1931 Japanese invasion of Manchuria. On September 18, 1931, Lieutenant Suemori Kawamoto of the Independent Garrison Unit of the 29th Japanese Infantry Regiment detonated a small quantity of dynamite close to a railway line owned by Japan's South Manchuria Railway near Mukden. The explosion was so weak that it failed to destroy the track, and a train passed over it minutes later. The Imperial Japanese Army accused Chinese dissidents of the act and responded with a full invasion that led to the occupation of Manchuria, in which Japan established its puppet state of Manchukuo five months later.

Millicent Lilian "Peg" Entwistle was a British stage and screen actress. She began her stage career in 1925, appearing in several Broadway productions. She appeared in only one film, Thirteen Women (1932), which was released posthumously. Entwistle gained notoriety after she jumped to her death from atop the 'H' on the Hollywoodland Sign in September 1932, at the age of 24.

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.

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 history of Jews in Denmark goes back to the 1600s. Although there were very likely Jewish merchants, sailors, and others who entered Denmark during the Middle Ages, no efforts were made to establish a Jewish community. At present, the Jewish community in Denmark comprises about 6,000 persons.

HMS Tradewind was a British submarine of the third group of the T class. She was built as P329 at Chatham, and launched on 11 December 1942. As of 2021 she is the only ship of the Royal Navy to have been named Tradewind, after the trade winds.

Operation Market Garden was an Allied military operation during the Second World War, fought in the German-occupied Netherlands from 17 to 25 September 1944. Its objective was to create a salient spanning 62 miles (100 km) into German territory with a bridgehead over the Nederrijn, creating an Allied invasion route into northern Germany. This was to be achieved by two sub-operations: seizing nine bridges with combined American, British and Polish airborne forces ("Market") followed by British land forces swiftly following over the bridges ("Garden").

The Battle of Arracourt took place between U.S. and German armoured forces near the town of Arracourt, Lorraine, France between 18 and 29 September 1944, during the Lorraine Campaign of World War II. As part of a counteroffensive against recent U.S. advances in France, the German 5th Panzer Army had as its objective the recapture of Lunéville and the elimination of the XII Corps bridgehead over the Moselle River at Dieulouard.

Douglas MacArthur was an American general. He served with distinction in World War I; as chief of staff of the United States Army from 1930 to 1935; as Supreme Commander, Southwest Pacific Area, from 1942 to 1945; as Supreme Commander for the Allied Powers overseeing the occupation of Japan from 1945 to 1951; and as head of the United Nations Command in the Korean War from 1950 to 1951. He is one of only five people to hold the rank of General of the Army, and the only person to hold the rank of Field Marshal in the Philippine Army.

The National Security Act of 1947 is a law enacting major restructuring of the United States government's military and intelligence agencies following World War II. The majority of the provisions of the act took effect on September 18, 1947, the day after the Senate confirmed James Forrestal as the first secretary of defense.

The annexation of Hyderabad was a military operation launched in September 1948 that resulted in the annexation of the princely state of Hyderabad by India, which was dubbed a "police action".

Margaret Madeline Chase Smith was an American politician. A member of the Republican Party, she served as a U.S. representative (1940–1949) and a U.S. senator (1949–1973) from Maine. She was the first woman to serve in both houses of the U.S. Congress. A Republican, she was among the first to criticize the tactics of Joseph McCarthy in her 1950 speech "Declaration of Conscience".

The Korean War was an armed conflict fought on the Korean Peninsula between North Korea and South Korea and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations led by the United States under the auspices of the United Nations Command (UNC).

Rede Tupi was a Brazilian commercial terrestrial television network. Its flagship station, located in the city of São Paulo, was the first TV station to operate in the country, being inaugurated on 18 September 1950 by journalist Assis Chateaubriand. It was owned by Diários Associados, one of the largest media conglomerates of the 20th century, owner of several newspapers, magazines, and radio stations.

Juho Kusti Paasikivi was a Finnish politician who served as the president of Finland from 1946 to 1956. Representing the Finnish Party until its dissolution in 1918 and then the National Coalition Party, he previously served as senator, member of parliament, envoy to Stockholm (1936–1939) and Moscow (1940–1941), and Prime Minister of Finland. He also held several other positions of trust, and was an influential figure in Finnish economics and politics for over fifty years.

Dag Hjalmar Agne Carl Hammarskjöld was a Swedish economist and diplomat who served as the second Secretary-General of the United Nations from April 1953 until his death in a plane crash in September 1961. As of 2026, he remains the youngest person to have held the post, having been 47 years old when he was elected. He was a son of Hjalmar Hammarskjöld, who served as Prime Minister of Sweden from 1914 to 1917.

Burundi, officially the Republic of Burundi, is a landlocked country in East Africa. It is located in the Great Rift Valley at the junction between the African Great Lakes region and southeastern Africa, with a population of over 14 million people. It is bordered by Rwanda to the north, Tanzania to the east and southeast, and the Democratic Republic of the Congo to the west; Lake Tanganyika lies along its southwestern border. The political capital city is Gitega and the economic capital and largest city is Bujumbura.

Aeroflot Flight 213 was a regularly scheduled passenger flight operated by Aeroflot from Chersky Airport to Keperveyem Airport. On 18 September 1962, the Ilyushin Il-14 operating this flight crashed shortly after takeoff. All 27 passengers and five crew members were killed.

The Addams Family is an American Gothic sitcom based on Charles Addams's New Yorker cartoons. With an ensemble cast, the 30-minute television series took the unnamed characters in the single-panel gag cartoons and gave them names, backstories, and a household setting. The series was spearheaded by David Levy, who created and developed it with Donald Saltzman in cooperation with cartoonist Addams, who gave each character a name and description. Shot in black-and-white, The Addams Family aired for two seasons on ABC from September 18, 1964, to April 8, 1966, for a total of 64 episodes — its opening theme was composed and sung by Vic Mizzy.

Hurricane Fifi was a catastrophic tropical cyclone that killed over 8,000 people in Honduras in September 1974, ranking it as the third deadliest Atlantic hurricane on record, only behind Hurricane Mitch in 1998, and the 1780 hurricane. Fifi is also the first billion-dollar hurricane not to make landfall in the United States. Originating from a strong tropical wave on September 14, the system steadily tracked west-northwestward through the eastern Caribbean. On September 16, the depression intensified into Tropical Storm Fifi just off the coast of Jamaica. The storm quickly intensified into a hurricane the following afternoon and attained its peak intensity on September 18 as a strong Category 2 hurricane. Maintaining hurricane intensity, Fifi brushed the northern coast of Honduras before making landfall in Belize the following day. The storm quickly weakened after landfall, becoming a depression late on September 20, dissipating the following day. The remnants led to the formation of Hurricane Orlene in the eastern Pacific Ocean.

The Titan II was an intercontinental ballistic missile (ICBM) developed by the Glenn L. Martin Company from the earlier Titan I missile. Titan II was originally designed and used as an ICBM, but was later adapted as a medium-lift space launch vehicle to carry payloads to Earth orbit for the United States Air Force (USAF), National Aeronautics and Space Administration (NASA) and National Oceanic and Atmospheric Administration (NOAA). Those payloads included the USAF Defense Meteorological Satellite Program (DMSP), NOAA weather satellites, and NASA's Gemini crewed space capsules. The modified Titan II SLVs were launched from Vandenberg Air Force Base, California, up until 2003.

The 8888 Uprising, also known as the 1988 Uprising, was a series of nationwide protests, marches, and riots in Burma that peaked in August 1988. Key events occurred on 8 August 1988 and therefore it is commonly known as the "8888 Uprising". The protests began as a student movement and were organised largely by university students at the Rangoon Arts and Sciences University and the Rangoon Institute of Technology.

Henri Namphy was a Haitian general and political figure who served as President of Haiti's interim ruling body, the National Council of Government, from 7 February 1986 to 7 February 1988. He served again as President of Haiti from 20 June 1988 after the June 1988 coup that he led, until his deposition on September 17, 1988 in the September coup.

Liechtenstein, officially the Principality of Liechtenstein, is a doubly landlocked country in the Central European Alps. A microstate, it is located between Austria to the east and north-east and Switzerland to the north-west, west and south.

The Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction of 1997, known informally as the Ottawa Treaty, the Anti-Personnel Mine Ban Convention, or often simply the Mine Ban Treaty, aims at eliminating anti-personnel landmines (APLs) around the world.

Anthrax is an infection caused by the bacterium Bacillus anthracis or Bacillus cereus biovar anthracis. Infection typically occurs by contact with the skin, inhalation, or intestinal absorption. Symptom onset occurs between one day and two months after the infection is contracted. The skin form presents with a small blister with surrounding swelling that often turns into a painless ulcer with a black center. The inhalation form presents with fever, chest pain, and shortness of breath. The intestinal form presents with diarrhea, abdominal pains, nausea, and vomiting.

The Saffron Revolution was a series of economic and political protests and demonstrations that took place during August, September and October 2007 in Myanmar. The protests were triggered by the decision of the national military government to remove subsidies on the sales prices of fuel. The national government is the only supplier of fuels and the removal of the price subsidy immediately caused diesel and petrol prices to increase by 66–100% and the price of compressed natural gas for buses to increase 500% in less than a week.

Via Rail Canada Inc., operating as Via Rail, is a Canadian federal Crown corporation that operates intercity passenger rail service in Canada.

A referendum on Scottish independence from the United Kingdom was held in Scotland on 18 September 2014. The referendum question was "Should Scotland be an independent country?", which voters answered with "Yes" or "No". The "No" side won with 2,001,926 (55.3%) voting against independence and 1,617,989 (44.7%) voting in favour. The turnout of 84.6% was the highest recorded for an election or referendum in the United Kingdom since the January 1910 general election, which was held before the introduction of universal suffrage.

The 2016 Uri attack was carried out on 18 September 2016 by four terrorists from Jaish-e-Mohammed against an Indian Army brigade headquarters near the town of Uri in the Indian Jammu and Kashmir. 19 Indian soldiers were killed in the attack, and 19–30 others were injured. It was reported by the BBC as having been "the deadliest attack on Indian Forces in Kashmir in two decades".