April 12 in History

Shapur I (also spelled Shabuhr I; Middle Persian: 𐭱𐭧𐭯𐭥𐭧𐭥𐭩, romanized: Šābuhr) also known as Shapur I the Great was the second Sasanian King of Kings of Iran. The precise dating of his reign is disputed, but it is generally agreed that he ruled from 240 to 270, with his father Ardashir I as co-regent until the death of the latter in 242. Shapur also consolidated and expanded the empire of Ardashir I, waged war against the Roman Empire, and seized its cities of Nisibis and Carrhae while he was advancing as far as Roman Syria. Although he was defeated at the Battle of Resaena in 243 by Roman emperor Gordian III (r. 238–244), the following year he was able to win the Battle of Misiche and force the new Roman emperor Philip the Arab (r. 244–249) to sign a favorable peace treaty that was regarded by the Romans as "a most shameful treaty". Shapur later took advantage of the political turmoil within the Roman Empire by undertaking a second expedition against it in 252/3–256, sacking the cities of Antioch and Dura-Europos. In 260, during his third campaign, he defeated and captured the Roman emperor, Valerian. He did not seem interested in permanently occupying the Roman provinces, choosing instead to resort to plundering and pillaging, gaining vast amounts of riches. The captives of Antioch, for example, were allocated to the newly reconstructed city of Gundeshapur, later famous as a center of scholarship. In the 260s, subordinates of Shapur suffered setbacks against Odaenathus, the king of Palmyra. According to Shapur's inscription at Hajiabad, he still remained active at the court in his later years, participating in archery. He died of illness in Bishapur, most likely in May 270. Shapur was the first Iranian monarch to use the title of "King of Kings of Iranians and non-Iranians"; beforehand the royal titulary had been "King of Kings of Iranians". He had adopted the title due to the influx of Roman subjects whom he had deported during his campaigns. However, it was first under his son and successor Hormizd I, that the title became regularized. Shapur had new Zoroastrian fire temples constructed, incorporated new elements into the faith from Greek and Indian sources, and conducted an extensive program of rebuilding and refounding of cities. He was also tolerant of Manichaeism, a new religious movement founded during his time by the prophet Mani.

Procopius Anthemius (Ancient Greek: Προκόπιος Ανθέμιος, romanized: Prokópios Anthémios; died 11 July 472) was the Western Roman emperor from 467 to 472. Born in the Eastern Roman Empire, Anthemius quickly worked his way up the ranks. He married into the Theodosian dynasty through Marcia Euphemia, daughter of Eastern emperor Marcian. He soon received a significant number of promotions to various posts, and was presumed to be Marcian's planned successor. However, Marcian's sudden death in 457, together with that of Western emperor Avitus, left the imperial succession in the hands of Aspar. He instead appointed Leo, a low-ranking officer, to the Eastern throne, probably out of fear that Anthemius would be too independent. Eventually, this same Leo designated Anthemius as Western emperor in 467, following a two-year interregnum that started in November 465. Anthemius attempted to solve the two primary military challenges facing the remains of the Western Roman Empire: the resurgent Visigoths, under Euric, whose domain straddled the Pyrenees; and the unvanquished Vandals, under Geiseric, in undisputed control of North Africa. Anthemius's insistence on ruling independently placed him into direct conflict with the Gothic general Ricimer. Previously the real power behind the throne, Ricimer found that Anthemius's reign threatened his own interests. This eventually escalated into open warfare between the two, with the result that Anthemius lost not only his throne, but also his head, in 472.

Edwin (Old English: Ēadwine; c. 586 – 12 October 632/633), also known as Eadwine or Æduinus, was the King of Deira and Bernicia – which later became known as Northumbria – from around 616 until his death. He was the second monarch to rule both of these northern English kingdoms and the first to convert to Christianity. After he died in battle, he was venerated as a saint. Edwin was the son of Ælle, the first known king of Deira, and likely had at least two siblings. His sister Acha was married to Æthelfrith, king of neighbouring Bernicia. Edwin was forced into exile when Æthelfrith conquered Deira. His travels took him to the court of Rædwald of East Anglia, who defeated Æthelfrith in 616, allowing Edwin to ascend the thrones of Bernicia and Deira. After the death of his patron Rædwald around 624, Edwin became the most powerful ruler in Britain. Bede the Venerable includes him in his list of kings who exercised imperium over other Anglo-Saxon monarchs, and the Anglo-Saxon Chronicle gives him the title bretwalda, or "ruler of Britain". In 627, Edwin was baptised under the influence of his wife, Æthelburh of Kent, and the Roman missionary Paulinus, who became the first Bishop of York. After reigning for seventeen years, Edwin was defeated and killed in 633 at the Battle of Hatfield Chase by the combined armies of his supposed foster-brother Cadwallon ap Cadfan and the pagan Penda of Mercia. After his death, Bernicia and Deira were again separated under two pagan kings. Their reunification was accomplished by Oswald, a son of Æthelfrith, who defeated and killed Cadwallon and united Northumbria once more.

Prince of Antioch (Latin: princeps Antiochenus) was the title given during the Middle Ages to Norman rulers of the Principality of Antioch, a region surrounding the city of Antioch (modern Antakya, Turkey). The Princes originally came from the County of Sicily. Prince Bohemond IV of Antioch additionally came into possession of the County of Tripoli, combining these two Crusader states for the rest of their histories. Bohemond I claimed Antioch under contentious circumstances during the First Crusade after previously pledging to return former Byzantine lands to Alexios I Komnenos. Bohemond began issuing documents calling himself the prince of Antioch circa 1106, after his return from the crusade. Antioch had been the chief city of the region since the time of the Roman Empire. When the Mamluk Sultanate of Egypt drove out the knights in 1268, they largely destroyed the city to deny access to the region in case the Crusaders returned.

The Crusades were a series of military campaigns launched by the papacy between 1095 and 1291 against Muslim rulers for the recovery and defence of the Holy Land, as part of a wider crusading movement. The First Crusade was proclaimed by Pope Urban II at the Council of Clermont in November 1095—a call to arms for Christians to reconquer Jerusalem from the Muslims, with promises of spiritual reward. By this time, the papacy's position as head of the Catholic Church had strengthened, and earlier conflicts with secular rulers and wars on the frontiers of Western Christendom had prepared it for the direction of armed force in religious causes. The successes of the First Crusade led to the establishment of four Crusader states in the Levant, whose defence required further expeditions from Catholic Europe. The organisation of such large-scale campaigns demanded complex religious, social, and economic institutions, including crusade indulgences, military orders, and the taxation of clerical income. Over time, the crusading movement expanded to include campaigns against pagans, Christian dissidents, and other enemies of the papacy, promoted with similar spiritual rewards and continuing into the 18th century.

The Union Jack or Union Flag is the national flag of the United Kingdom. While no law has been enacted making the Union Flag the national flag of the United Kingdom, it has become so through precedent.

The American Revolution (1765–1789) was a political movement in the Thirteen Colonies of Great Britain. It began as a rebellion and turned into a revolution eventually creating the sovereign United States, which was the outcome of the associated American Revolutionary War (1775–1783). The Second Continental Congress, as the provisional government, established the Continental Army and appointed George Washington as its commander-in-chief in 1775. The following year, the Congress passed the Lee Resolution on July 2nd and unanimously adopted the Declaration of Independence on July 4th. Throughout most of the war, the outcome appeared uncertain, but a 1781 victory by Washington and the Continental Army in the Siege of Yorktown led King George III and the Fox–North coalition in government to negotiate the cessation of colonial rule and the acknowledgment of American sovereignty, which was formalized in the Treaty of Paris, signed on September 3, 1783. The Constitution took effect in 1789 and the Bill of Rights was ratified in 1791. Discontent with colonial rule began shortly after the French and Indian War, which ended in 1763. Although the colonies had fought and supported the war directly, the British Parliament imposed new taxes, ostensibly to compensate for wartime costs, and transferred control of the colonies' western lands to British officials in Montreal. Representatives from several colonies convened in New York City for the Stamp Act Congress in 1765. Its declaration argued that taxation without representation and other policies violated their rights as Englishmen. In 1767, though the Stamp Act was repealed, tensions increased again following Parliament's passing of the Townshend Acts. In an effort to quell the mounting rebellion, King George III deployed British troops to the colony of Massachusetts, where there was a conflict in the 1770 Boston Massacre. In December 1773, the local faction of the Sons of Liberty orchestrated the Boston Tea Party, during which they dumped chests of taxed tea owned by the British East India Company into the Boston Harbor. Parliament responded by enacting a series of punitive laws, called the Intolerable Acts. These were intended to end self-government in Massachusetts but instead increased American support for revolution. In 1774, 12 of the Thirteen Colonies sent delegates to the First Continental Congress (the Province of Georgia joined in 1775). The First Continental Congress began coordinating Patriot resistance through underground networks of committees largely built on the foundations of the Sons of Liberty network. In August 1775, King George III proclaimed Massachusetts to be in rebellion. The British attempted to disarm the colonists, resulting in the Battles of Lexington and Concord, starting the Revolutionary War. The Second Continental Congress convened in May of 1775 and created the Continental Army, which then surrounded Boston, forcing the British to withdraw by sea in March 1776 and leaving Patriots in control in every colony. In May 1776, Congress voted to suppress all forms of Crown authority to be replaced by locally created authority, and each colony created a state constitution. On July 2, the Congress passed the Lee Resolution, affirming their support for joint independence. On July 4, 1776, they unanimously adopted the Declaration of Independence, basing the new nation on the revolutionary concept of protecting and guaranteeing inalienable rights and proclaiming that "all men are created equal". After that, Congress began drafting the Articles of Confederation, an effort to establish a multi-state self-governing coordinating body capable of negotiating international treaties and prosecuting the war. The Revolutionary War continued for another seven years, during which France eventually entered. On September 28, 1781, Washington commanded the Continental Army's capture of a British army under General Cornwallis at the Siege of Yorktown, leading to the collapse of King George's control of Parliament. Consensus in Parliament soon shifted to the war ending on American terms. On September 3, 1783, the British signed the Treaty of Paris, recognizing the sovereign independence of the United States, and ceding to the new nation nearly all the territory east of the Mississippi River and south of the Great Lakes. The United States became the first nation to establish a federal republic with a written constitution based on the principles of universal natural rights, consent of the governed, and equality under the law, although with significant democratic limitations compared to later evolution of the concept.

The Royal Navy (RN) is the naval warfare force of the United Kingdom, responsible for defending the country, the Crown Dependencies, and the Overseas Territories from naval attack or invasion. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the English Navy of the early 16th century, making it the oldest of the United Kingdom's armed services. It is consequently known as the Senior Service.

The War of the First Coalition was a set of wars between a coalition of several European powers and France fought from 1792 to 1797. The coalition was only loosely allied and fought without much coordination; each power wanted to annex a different part of France should they defeat the French, something that never occurred.

The Froberg mutiny was a mutiny within the British armed forces staged between 4 and 12 April 1807 at Fort Ricasoli on the island of Malta, then a British protectorate, by the Froberg Regiment. The regiment had been formed using dubious methods, with personnel recruited from various nationalities in Albania and the Ottoman Empire. The troops, who had arrived on Malta in 1806, were unhappy with their rank and pay. The mutiny lasted for eight days, during which several people were killed and the fort was damaged. The mutiny was put down and the ringleaders were executed. It was one of the most serious mutinies of the Napoleonic Wars.

Alexandros Ypsilantis (12 December 1792 – 31 January 1828) was a Greek nationalist politician who was member of a prominent Phanariot Greek family, a prince of the Danubian Principalities, a senior officer of the Imperial Russian cavalry during the Napoleonic Wars, and a leader of the Filiki Etaireia, a secret organization that coordinated the beginning of the Greek War of Independence against the Ottoman Empire.

Broughton Suspension Bridge was an iron chain suspension bridge built in 1826 to span the River Irwell between Broughton and Pendleton, now in Salford, Greater Manchester, England. One of Europe's first suspension bridges, it has been attributed to Samuel Brown, although some suggest it was built by Thomas Cheek Hewes, a Manchester millwright and textile machinery manufacturer. On 12 April 1831, the bridge collapsed, reportedly due to mechanical resonance induced by troops marching in step. As a result of the incident, the British Army issued an order that troops should "break step" when crossing a bridge. Although rebuilt and strengthened, the bridge was subsequently propped with temporary piles whenever crowds were expected. In 1924, it was replaced by a Pratt truss footbridge, still in use.

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.

The Great Locomotive Chase (a portion of the Andrews' Raid or the Mitchel Raid) was a military raid that occurred April 12, 1862, in northern Georgia during the American Civil War. Volunteers from the Union Army, led by civilian scout James J. Andrews, commandeered a steam locomotive, The General, and took it northward toward Chattanooga, Tennessee, doing as much damage as possible to the vital Western and Atlantic Railroad (W&A) line from Atlanta to Chattanooga as they went. They were pursued by Confederate forces at first on foot, and later on a succession of locomotives, including The Texas, for 87 miles (140 km). Because the Union men had cut the telegraph wires, the Confederates could not send warnings ahead to forces along the railway. Confederates eventually captured the raiders and quickly executed some as spies, including Andrews; some others were able to flee. The surviving raiders were the first to be awarded the newly created Medal of Honor by the U.S. Congress for their actions. As a civilian, Andrews was not eligible.

The Battle of Fort Pillow, also known as the Fort Pillow Massacre, was fought on April 12, 1864, at Fort Pillow on the Mississippi River in Henning, Tennessee, during the American Civil War. The battle ended with Confederate soldiers commanded by Major General Nathan Bedford Forrest massacring Union soldiers (many of them U.S. Colored Troops) attempting to surrender. Military historian David J. Eicher concluded: "Fort Pillow marked one of the bleakest, saddest events of American military history."

Mobile is a city and the county seat of Mobile County, Alabama, United States. The population was 187,041 at the 2020 census and estimated at 204,689 following an annexation in 2023, making it the second-most populous city in Alabama. The Mobile metropolitan area, with an estimated 412,000 people, is the third-most populous metropolitan area in the state.

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland, with a population of over 69 million in 2024. The UK includes the island of Great Britain, the north-eastern part of the island of Ireland, and most of the smaller islands within the British Isles, covering 94,354 square miles (244,376 km2). It shares a land border with the Republic of Ireland and is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea, while maintaining sovereignty over the Crown Dependencies and the British Overseas Territories. The capital and largest city of England and the UK is London; Edinburgh, Cardiff and Belfast are the national capitals of Scotland, Wales and Northern Ireland, respectively.

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

SMS Zrínyi ("His Majesty's ship Zrínyi" Hungarian pronunciation: [ˈzriːɲi]) was a Radetzky-class semi-dreadnought battleship (Schlachtschiff) of the Austro-Hungarian Navy (K.u.K. Kriegsmarine), named for the Zrinski, a Croatian-Hungarian noble family (Hungarian: Zrínyi). Zrínyi and her sisters, Erzherzog Franz Ferdinand and Radetzky, were the last pre-dreadnoughts built for the Austro-Hungarian Navy. During World War I, Zrínyi saw action in the Adriatic Sea. She served with the Second Division of the Austro-Hungarian Navy's battleships and shelled Senigallia as part of the bombardment of the key seaport of Ancona, Italy, during May 1915. However, Allied control of the Strait of Otranto meant that the Austro-Hungarian Navy was effectively contained in the Adriatic. Nonetheless, the presence of the Zrínyi and other battleships tied down a substantial force of Allied ships. With the war going against the Austrians by the end of 1918, Zrínyi was prepared for transfer to the new State of Slovenes, Croats and Serbs. On 10 November 1918, just one day before the end of the war, navy officers sailed the battleship out of Pola (Pula) and surrendered to a squadron of American submarine chasers. Following the handover to the United States Navy, she was briefly designated USS Zrínyi. In the Treaty of Saint-Germain-en-Laye, the transfer was not recognized; instead, Zrínyi was given to Italy and broken up for scrap.

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

The Shanghai massacre of 12 April 1927, the April 12 Purge or the April 12 Incident as it is commonly known in China, was the violent suppression of Chinese Communist Party (CCP) organizations and leftist elements in Shanghai by forces supporting General Chiang Kai-shek and conservative factions in the Kuomintang (Chinese Nationalist Party or KMT). The event began the campaign of anti-communist repression in Nationalist China. Following the incident, conservative KMT elements carried out a full-scale purge of communists in all areas under their control, and violent suppression occurred in Guangzhou and Changsha. The purge led to an open split between left-wing and right-wing factions in the KMT, with Chiang Kai-shek establishing himself as the leader of the right-wing faction based in Nanjing, in opposition to the original left-wing KMT government based in Wuhan, which was led by Wang Jingwei. By 15 July 1927, the Wuhan regime had expelled the CCP from its ranks, effectively ending the First United Front, a working alliance between the KMT and the CCP under the tutelage of Communist International (Comintern) agents. For the rest of 1927, the CCP would fight to regain power, beginning the Autumn Harvest Uprising and culminating with the Nanchang Uprising, nominally commencing the Chinese Civil War. With the failure and the crushing of the Guangzhou Uprising however, the power of the CCP was largely diminished, unable to launch another major urban offensive for years.

Rocksprings is a town in and the county seat of Edwards County, Texas, United States. At the 2020 census, the town population was 874, down from 1,182 at the 2010 census and 1,285 at the 2000 census. The town received its name from natural springs associated with the porous limestone rocks in the area.

The Bremen is a German Junkers W 33 aircraft that made the first successful transatlantic aeroplane flight from east to west on April 12 and 13, 1928. After weather delays lasting 17 days, the Bremen left Baldonnel Aerodrome, Ireland, on April 12 with a three man crew, arriving at Greenly Island, Canada, on April 13, after a flight fraught with difficult conditions and compass problems. Owner Ehrenfried Günther Freiherr von Hünefeld, a wealthy German aristocrat, and pilot Captain Hermann Köhl had made an all-German attempt at the feat in 1927, but had to abandon it due to bad weather. For this new attempt, they were joined by a third crewman, Irish navigator Major James Fitzmaurice. Fitzmaurice had also previously attempted the crossing, as co-pilot of the Princess Xenia (aircraft) with Robert Henry McIntosh, but they had to abandon the attempt due to high headwinds in September 1927.

In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature. Wind speed is now commonly measured with an anemometer.

Air Commodore Sir Frank Whittle (1 June 1907 – 8 August 1996) was an English engineer, inventor and Royal Air Force (RAF) air officer. He is credited with co-creating the turbojet engine. A patent was submitted by Maxime Guillaume in 1921 for a similar invention which was technically unfeasible at the time. Whittle's jet engines were developed some years earlier than those of Germany's Hans von Ohain, who designed the first-to-fly turbojet engine as well as Austria’s Anselm Franz. Whittle demonstrated an aptitude for engineering and an interest in flying from an early age. At first he was turned down by the RAF but, determined to join the force, he overcame his physical limitations and was accepted and sent to No. 2 School of Technical Training to join No 1 Squadron of Cranwell Aircraft Apprentices. He was taught the theory of aircraft engines and gained practical experience in the engineering workshops. His academic and practical abilities as an Aircraft Apprentice earned him a place on the officer training course at Cranwell. He excelled in his studies and became an accomplished pilot. While writing his thesis he formulated the fundamental concepts that led to the creation of the turbojet engine, taking out a patent on his design in 1930. His performance on an officers' engineering course earned him a place on a further course at Peterhouse, Cambridge, where he graduated with a First. Without Air Ministry support, he and two retired RAF servicemen formed Power Jets Ltd to build his engine with assistance from the firm of British Thomson-Houston. Despite limited funding, a prototype was created, which first ran in 1937. Official interest was forthcoming following this success, with contracts being placed to develop further engines, but the continuing stress seriously affected Whittle's health, eventually resulting in a nervous breakdown in 1940. In 1944 when Power Jets was nationalised he again suffered a nervous breakdown, and resigned from the board in 1946. In 1948, Whittle retired from the RAF and received a knighthood. He joined BOAC as a technical advisor before working as an engineering specialist with Shell, followed by a position with Bristol Aero Engines. After emigrating to the U.S. in 1976 he accepted the position of NAVAIR Research Professor at the United States Naval Academy from 1977 to 1979. In August 1996, Whittle died of lung cancer at his home in Columbia, Maryland. In 2002, Whittle was ranked number 42 in the BBC poll of the 100 Greatest Britons.

Franklin Delano Roosevelt (January 30, 1882 – April 12, 1945), also known as FDR, was the 32nd president of the United States, serving from 1933 until his death in 1945. He is the longest-serving US president and the only one to have served more than two terms. His first two terms centered on combating the Great Depression, while his third and fourth focused on US involvement in World War II. A member of the Democratic Party, Roosevelt served in the New York State Senate from 1911 to 1913 and as the 44th governor of New York from 1929 to 1932. Born into the prominent Delano and Roosevelt families, Roosevelt graduated from Harvard University. He was elected to the New York State Senate in 1910, before becoming the assistant secretary of the Navy under President Woodrow Wilson in 1913. Roosevelt was the running mate of James M. Cox on the Democratic ticket in the 1920 presidential election, which Cox lost to Republican nominee Warren G. Harding. In 1921, an illness permanently paralyzed his legs. However, partly through the encouragement of his wife Eleanor, he was elected governor of New York in 1928. As governor, he promoted programs to combat the Great Depression. Roosevelt defeated President Herbert Hoover in a landslide victory in the 1932 presidential election. During his first 100 days as president, Roosevelt initiated the program to implement the New Deal, built the New Deal coalition, and realigned American politics into the Fifth Party System. He created programs to provide relief to the unemployed and farmers while seeking economic recovery with the National Recovery Administration and other programs. He was re-elected in 1936, in one of the largest landslide victories in American history. Major surviving programs and legislation implemented under Roosevelt include the Securities and Exchange Commission, the National Labor Relations Act, and Social Security. In 1940, he was reelected, as there were no presidential term limits until 1951. Following the Japanese attack on Pearl Harbor on December 7, 1941, Roosevelt obtained a declaration of war on Japan, and subsequently on Nazi Germany and Fascist Italy. Roosevelt supervised the mobilization of the American economy to support the war effort and implemented a Europe first strategy. He also initiated the development of the first atomic bomb and worked with the other Allied leaders to lay the groundwork for the United Nations. Roosevelt won reelection in 1944, but died in 1945. Since then, some of his actions have been criticized, such as his ordering of the internment of German, Italian, and Japanese Americans. Nonetheless, historical rankings consistently place him among the three greatest American presidents.

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.

Polio vaccine is a vaccine used to prevent poliomyelitis (polio). Two types are used: an inactivated poliovirus given by injection (IPV) and a weakened poliovirus given by mouth (OPV). The World Health Organization (WHO) recommends all children be fully vaccinated against polio. The two vaccines have eliminated polio from most of the world, and reduced the number of cases reported each year from an estimated 350,000 in 1988 to 33 in 2018.

The Space Race was a 20th-century competition between the Cold War rivals, the United States and the Soviet Union, to achieve superior spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between the two nations that followed World War II and the onset of the Cold War. The technological advantage demonstrated by spaceflight achievement was seen as necessary for national security, particularly in regard to intercontinental ballistic missile and satellite reconnaissance capability, but also became part of the cultural symbolism and ideology of the time. The Space Race brought pioneering launches of artificial satellites, robotic landers to the Moon, Venus, and Mars, and human spaceflight in low Earth orbit and ultimately to the Moon.

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.

Transbrasil Flight 303 was a scheduled flight from Congonhas-São Paulo Airport in São Paulo, Brazil, to Hercílio Luz International Airport in Florianópolis, Brazil, on 12 April 1980. The Boeing 727-27C crashed on approach to Hercílio Luz International Airport. Only 3 of the 58 people on board survived.

Terrance Stanley Fox was a Canadian athlete, humanitarian, and cancer research activist. In 1980, having had one leg amputated due to cancer, he embarked on a cross-Canada run to raise money and awareness for cancer research. The annual Terry Fox Run, first held in 1981, has grown to involve millions of participants in over 60 countries and is the world's largest one-day fundraiser for cancer research; over C$1 billion has been raised in his name through the Terry Fox Research Institute as of February 2026.

The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program name was the Space Transportation System (STS), taken from the 1969 plan led by U.S. vice president Spiro Agnew for a system of reusable spacecraft where it was the only item funded for development.

Harold Lee Washington was an American politician and lawyer who was the 51st mayor of Chicago from 1983 until his death in 1987. A member of the Democratic Party, he was the first Black person to hold the office.

Space Shuttle Discovery is a retired American Space Shuttle orbiter. The spaceplane was one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first mission, STS-41-D, flew from August 30 to September 5, 1984. Over 27 years of service it launched and landed 39 times, aggregating more spaceflights than any other spacecraft as of December 2024. The Space Shuttle launch vehicle had three main components: the Space Shuttle orbiter, a single-use central fuel tank, and two reusable solid rocket boosters. Nearly 25,000 heat-resistant tiles cover the orbiter to protect it from high temperatures on re-entry.

Widerøe Flight 839, also known as the Værøy Accident, was a de Havilland Canada Twin Otter that crashed shortly after takeoff from Værøy Airport in Værøy Municipality in Lofoten, Norway. The accident occurred on 12 April 1990 at 14:44, killing all five people on board. The cause of the accident was strong winds that exceeded the structure's tolerance, causing the tail rudder and tailplane to crack and the aircraft to become uncontrollable. Impact occurred 63 seconds after takeoff and 8 seconds after the crack. The aircraft crashed into the water and a search was conducted for several days to locate the wreckage.

Disneyland Park, originally Euro Disneyland Park, is a theme park found at Disneyland Paris in Marne-la-Vallée, France. The park opened on 12 April 1992, as the first of the two parks built at the resort. Designed and built by Walt Disney Imagineering, its layout is similar to Disneyland Park at Disneyland Resort in California and Magic Kingdom Park at Walt Disney World in Florida. Spanning 56.656 ha —the second largest Disney park based on the original, after Shanghai Disneyland—it is dedicated to fairy tales and Disney characters.

William Jefferson Clinton is an American retired politician and lawyer who served as the 42nd president of the United States from 1993 to 2001. A member of the Democratic Party, he previously served as the attorney general of Arkansas from 1977 to 1979, the governor of Arkansas from 1979 to 1981, and governor again from 1983 to 1992. His centrist Third Way political philosophy became known as Clintonism, which defined his presidency and the succeeding decades of Democratic Party into the 21st century.

The North Atlantic Treaty Organization (NATO) carried out an aerial bombing campaign against the Federal Republic of Yugoslavia during the Kosovo War. The air strikes lasted from 24 March 1999 to 10 June 1999. The bombings continued until an agreement was reached that led to the withdrawal of the Yugoslav Army from Kosovo, and the establishment of the United Nations Interim Administration Mission in Kosovo, a UN peacekeeping mission in Kosovo. The official NATO operation code name was Operation Allied Force whereas the United States called it Operation Noble Anvil ; in Yugoslavia, the operation was incorrectly called Merciful Angel, possibly as a result of a misunderstanding or mistranslation.

A suicide bombing occurred on 12 April 2002 at a bus stop located at the entrance to the Mahane Yehuda Market, Jerusalem's main fruit and vegetable market. The site of the attack was chosen in order to cause maximum number of casualties. 6 civilians were killed in the attack and 104 were injured. The al-Aqsa Martyrs' Brigades claimed responsibility for the attack.

On 12 April 2007, the canteen of the Council of Representatives of Iraq building was attacked by a suicide bomber, killing one to eight people and wounding 23 others. The attack, in the heavily fortified Green Zone of Baghdad, occurred ten minutes after the Council of Representatives had adjourned for lunch. It was on the first floor of the Baghdad Convention Center, which houses the parliament. Two further unexploded suicide vests were found near the canteen. The building had earlier been searched by dogs – very rare considering dogs are considered ritually unclean by Iraqis – suggesting the authorities suspected an attack was imminent. Following the attack the government closed down mobile phone networks and Apache helicopters flew overhead.

Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country in Southeast Africa, between the Zambezi and Limpopo River, bordered by South Africa to the south, Botswana to the southwest, Zambia to the north, and Mozambique to the east. The capital and largest city is Harare, and the second largest is Bulawayo.

The Merano derailment occurred on 12 April 2010 when a train derailed between Latsch and Kastelbell, near Merano, Italy, after running into a landslide, causing nine deaths and injuring 28 people.