April 4 in History

Napoleon Bonaparte, later known by his regnal name Napoleon I, was Emperor of the French from 18 May 1804 until his first abdication in 1814, with a brief restoration during the Hundred Days in 1815. He rose to prominence as a general during the French Revolution and led a series of military campaigns across Europe and the Middle East during the French Revolutionary and Napoleonic Wars. As a statesman, he implemented numerous legal and administrative reforms in France and Europe.

William Henry Harrison was the 9th president of the United States, from March to April 1841. Harrison served the shortest term of any president at 31 days. He was the first president to die in office, which triggered a brief constitutional crisis since presidential succession was ambiguous in the U.S. Constitution. He was the last president born prior to the U.S. Declaration of Independence in 1776, making him a British subject. A member of the Harrison family of Virginia, he was a son of Founding Father Benjamin Harrison V, the father of John Scott Harrison, and the paternal grandfather of Benjamin Harrison, the 23rd president of the United States.

The American Civil War was a civil war in the United States between the Union and the Confederacy, which was formed in 1861 by states that had seceded from the Union to preserve slavery in the United States, which they saw as threatened because of the election of Abraham Lincoln and the growing abolitionist movement in the North. The war lasted a little over four years, ending with Union victory, the dissolution of the Confederacy and the abolition of slavery, freeing four million African Americans.

Argonia is a city in Sumner County, Kansas, United States. As of the 2020 census, the population of the city was 456.

The 1904 Kresna earthquakes occurred on the same day of April 4 in the Kresna region of Bulgaria. The pair of earthquakes measured 6.9 and 7.2 on the surface wave magnitude scale, and were assigned the respective Modified Mercalli intensity scale ratings of X (Extreme) and XI (Extreme). More than 200 people were killed in the two earthquakes. Several villages were obliterated as a result.

The First Balkan War lasted from October 1912 to May 1913 and involved actions of the Balkan League against the Ottoman Empire. The Balkan states' combined armies overcame the initially numerically inferior and strategically disadvantaged Ottoman armies, achieving rapid success.

The Schutzstaffel was a major paramilitary organisation under Adolf Hitler and the Nazi Party in Nazi Germany, and later throughout German-occupied Europe during World War II.

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. Tanks and aircraft played major roles, the latter enabling the strategic bombing of cities and delivery of the only nuclear weapons used in war. World War II was the deadliest conflict in history, causing the death of 60 to 75 million people. 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 Battle of Kassel was a four-day struggle between the U.S. Army and the German Army in April 1945 for Kassel, a medium-sized city 140 kilometers northeast of Frankfurt am Main, which also is the second-largest city in Hesse. The battle resulted as the U.S. Third Army pushed northeast from the region of Frankfurt and Mainz. The battle opened on April 1, 1945 and ended with an American victory three days later. Opposing the Third Army's 80th Infantry Division were an infantry replacement battalion, some heavy tanks, and anti-aircraft guns. Although the Germans gave battle at Kassel, their army was on the brink of collapse as the Western Allies and the Red Army made deep inroads into Germany. The defense of Kassel did not materially impede the Allied advance, and, one month after the battle ended, Germany was forced to capitulate.

Panagiotis Poulitsas was a Greek judge and archeologist who briefly served as interim Prime Minister of Greece from 4 April 1946 to 18 April 1946. He was born in Geraki, Laconia on 9 September 1881.

The Campaign for Nuclear Disarmament (CND) is an organisation that advocates unilateral nuclear disarmament by the United Kingdom, international nuclear disarmament and tighter international arms regulation through agreements such as the Nuclear Non-Proliferation Treaty. It opposes military action that may result in the use of nuclear, chemical or biological weapons, and the building of nuclear power stations in the UK.

Bye Bye Birdie is a 1963 American musical romantic comedy film directed by George Sidney from a screenplay by Irving Brecher, based on Michael Stewart's book of the 1960 musical of the same name. It also features songs by composer Charles Strouse and lyricist Lee Adams and a score by Johnny Green. Produced by Fred Kohlmar, the film stars Janet Leigh, Dick Van Dyke, Ann-Margret, Maureen Stapleton, Paul Lynde, Bobby Rydell, Jesse Pearson and Ed Sullivan. Van Dyke and Lynde reprised their roles from the original Broadway production.

Martin Luther King Jr. was an American civil rights activist and Baptist minister who was a prominent leader of the civil rights movement from 1955 until his assassination in 1968. He advanced civil rights for people of color in the United States through the use of nonviolent resistance and civil disobedience against Jim Crow laws and other forms of legalized discrimination, which most commonly affected African Americans.

The Apollo program, also known as Project Apollo, was the United States human spaceflight program led by NASA, which landed the first humans on the Moon in 1969. Apollo was conceived in 1960 in the Dwight D. Eisenhower presidency during Project Mercury and executed after Project Gemini. Apollo was later dedicated to President John F. Kennedy's national goal, "before this decade is out, of landing a man on the Moon and returning him safely to the Earth" in his address to the U.S. Congress on May 25, 1961.

The original World Trade Center (WTC) was a complex of seven buildings in the Financial District of Lower Manhattan in New York City. Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed on September 11, 2001. The complex included the 110-story-tall Twin Towers, at the time of their completion the tallest buildings in the world, with the original 1 World Trade Center at 1,368 feet (417 m), and 2 World Trade Center at 1,362 feet (415.1 m); they were also the tallest twin skyscrapers in the world until 1996, when the Petronas Towers opened in Kuala Lumpur, Malaysia. The other buildings in the complex were the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC. The complex contained 13,400,000 square feet (1,240,000 m2) of office space and, prior to its completion, was projected to accommodate an estimated 130,000 people.

Microsoft Corporation is an American multinational technology company headquartered in Redmond, Washington. The company became influential in the rise of personal computers through software like Windows and has since expanded into areas such as Internet services, cloud computing, artificial intelligence, video gaming, and more. A Big Tech company, Microsoft is the largest software company by revenue, one of the most valuable public companies, and one of the most valuable brands globally.

Southern Airways Flight 242 was a scheduled flight from Muscle Shoals, Alabama, to Atlanta, Georgia, with a stop in Huntsville, Alabama. On April 4, 1977, the Douglas DC-9-31 executed a forced landing on Georgia State Route 381 in New Hope, Paulding County, Georgia, United States, after suffering hail damage and losing thrust on both engines in a severe thunderstorm.

The Iran–Iraq War began with the Iraqi invasion of Iran in September 1980. After eight years of conflict, both countries accepted a ceasefire deal brokered by the United Nations, which became effective in August 1988. The war caused around 500,000 deaths, making it the deadliest conventional war ever fought between regular armies of developing countries.

Ronald Wilson Reagan was an American politician and actor who served as the 40th president of the United States from 1981 to 1989. A member of the Republican Party, he became an important figure in the American conservative movement. The period encompassing his presidency is known as the Reagan era.

The governor of Arizona is the head of government of the U.S. state of Arizona. As the top elected official, the governor is the head of the executive branch of the Arizona state government and is charged with faithfully executing state laws. The governor has the power to either approve or veto bills passed by the Arizona State Legislature; to convene the legislature; and to grant pardons, with the exception of cases of impeachment. The governor is also the commander-in-chief of the state's military forces. Arizona is one of the few states that currently does not have a governor's mansion or other official residence.

Henry John Heinz III was an American businessman and politician who served as a United States senator from Pennsylvania from 1977 until his death in 1991. An heir to the Heinz family fortune, Heinz entered politics in 1971 when he won a special election to replace Robert Corbett to represent Pennsylvania's 18th congressional district. In 1976, Heinz ran to replace retiring Senate Minority Leader Hugh Scott. Heinz narrowly won in the Republican primary over future Senator Arlen Specter and defeated William Green III in the general election. Heinz won re-election in 1982 and 1988 by large margins. On April 4, 1991, Heinz was killed when his plane, facing mechanical problems, collided with a helicopter inspecting the plane, killing all involved in the crash.

KLM Cityhopper Flight 433 was a Saab 340B, registered as PH-KSH, which crashed during an emergency landing on 4 April 1994, resulting in the death of 3 occupants, including the captain. Flight 433 was a routine scheduled flight from Amsterdam, the Netherlands, to Cardiff, Wales, United Kingdom. The accident was caused by inadequate pilot training and a faulty sensor, leading to loss of control during go-around.

Space Shuttle Columbia (OV-102) was a Space Shuttle orbiter manufactured by Rockwell International and operated by NASA. Named after the first American ship to circumnavigate the globe, and the female personification of the United States, Columbia was the first of five Space Shuttle orbiters to fly in space, debuting the Space Shuttle launch vehicle on its maiden flight on April 12, 1981 and becoming the first spacecraft to be re-used after its first flight when it launched on STS-2 on November 12, 1981. As only the second full-scale orbiter to be manufactured after the Approach and Landing Test vehicle Enterprise, Columbia retained unique external and internal features compared with later orbiters, such as test instrumentation and distinctive black chines. In addition to a heavier aft fuselage and the retention of an internal airlock throughout its lifetime, these made Columbia the heaviest of the five spacefaring orbiters: around 1,000 kilograms heavier than Challenger and 3,600 kilograms heavier than Endeavour when originally constructed. Columbia also carried ejection seats based on those from the SR-71 during its first six flights until 1983, and from 1986 onwards carried an imaging pod on its vertical stabilizer.

France, officially the French Republic, is a country primarily located in Western Europe. Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its 18 integral regions—five of which are overseas—span a combined area of 632,702 km2 (244,288 sq mi), with a total population estimated at over 69.1 million in 2026. Its capital, largest city and main cultural and economic centre is Paris.

On 4 April 2011, Georgian Airways Flight 834, a Bombardier CRJ100 passenger jet of Georgian Airways operating a domestic flight from Kisangani to Kinshasa in the Democratic Republic of the Congo (DRC), crashed while attempting to land at Kinshasa Airport. The aircraft, which was chartered by the United Nations, was trying to land during a thunderstorm. Of the 33 people on board, only one person survived. The incident remains the United Nations' deadliest aviation disaster. It is also the third-deadliest air disaster involving the CRJ100/200, behind Comair Flight 5191 and China Eastern Airlines Flight 5210.

The Khan Shaykhun chemical attack took place on 4 April 2017 on the town of Khan Shaykhun in the Idlib Governorate of Syria. The town was reported to have been struck by an airstrike by government forces followed by massive civilian chemical poisoning. The release of a toxic gas, which included sarin, or a similar substance, killed at least 89 people and injured more than 541, according to the opposition Idlib Health Directorate. The attack was the deadliest use of chemical weapons in the Syrian civil war since the Ghouta chemical attack in 2013.

Finland, or the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, opposite Estonia. Its capital and largest city is Helsinki. Finland has a population of 5.7 million. The official languages are Finnish and Swedish, the mother tongues of 83.5 percent and 5.0 percent of the population, respectively. Finland's climate varies from humid continental in the south to boreal in the north. Its land is predominantly covered by boreal forest, with over 180,000 recorded lakes.