April 7 events in history

451 Attila the Hun sacks the town of Metz and attacks other cities in Gaul
529 First draft of the Corpus Juris Civilis (a fundamental work in jurisprudence) is issued by Eastern Roman Emperor Justinian I
611 Maya king Uneh Chan of Calakmul sacks rival city-state Palenque in southern Mexico
1141 Empress Matilda, became the first female ruler of England, adopting the title 'Lady of the English'
1348 Charles University is founded in Prague
1521 Ferdinand Magellan arrives at Cebu
1541 Francis Xavier leaves Lisbon on a mission to the Portuguese East Indies
1724 Premiere performance of Johann Sebastian Bach's St John Passion BWV 245 at St. Nicholas Church, Leipzig
1767 End of Burmese–Siamese War (1765–1767)
1776 Captain John Barry and the USS Lexington captures the Edward
1788 American Pioneers to the Northwest Territory arrive at the confluence of the Ohio and Muskingum rivers, establishing Marietta, Ohio, as the first permanent American settlement of the new United States in the Northwest Territory, and opening the westward expansion of the new country
1789 Selim III became Sultan of the Ottoman Empire and Caliph of Islam
1798 The Mississippi Territory is organized from disputed territory claimed by both the United States and Spain. It is expanded in 1804 and again in 1812
1805 Lewis and Clark Expedition: The Corps of Discovery breaks camp among the Mandan tribe and resumes its journey West along the Missouri River
1827 John Walker, an English chemist, sells the first friction match that he had invented the previous year
1829 Joseph Smith, Jr., founder of the Latter Day Saint movement, commences translation of the Book of Mormon, with Oliver Cowdery as his scribe
1831 D. Pedro I, Emperor of Brazil, resigns. He goes to his native Portugal to become King D. Pedro IV
1862 American Civil War: Battle of Shiloh ends – the Union Army under General Ulysses S. Grant defeats the Confederates near Shiloh, Tennessee
1868 Thomas D'Arcy McGee, one of the Canadian Fathers of Confederation is assassinated by Irish Republicans, in one of the few Canadian political assassinations, and the only one of a federal politician
1890 Completion of the first Lake Biwa Canal
1906 Mount Vesuvius erupts and devastates Naples
1906 The Algeciras Conference gives France and Spain control over Morocco
1908 H. H. Asquith of the Liberal Party takes office as Prime Minister of the United Kingdom, succeeding Sir Henry Campbell-Bannerman
1922 Teapot Dome scandal: United States Secretary of the Interior leases Teapot Dome petroleum reserves in Wyoming
1927 First long-distance public television broadcast (from Washington, D.C., to New York City, displaying the image of Commerce Secretary Herbert Hoover)
1933 Prohibition in the United States is repealed for beer of no more than 3.2% alcohol by weight, eight months before the ratification of the XXI amendment
1939 World War II: Italy invades Albania
1940 Booker T. Washington becomes the first African American to be depicted on a United States postage stamp
1943 Holocaust: In Terebovlia, Ukraine, Germans order 1,100 Jews to undress to their underwear and march through the city of Terebovlia to the nearby village of Plebanivka where they are shot dead and buried in ditches
1943 Ioannis Rallis becomes collaborationist Prime Minister of Greece during the Axis Occupation
1945 World War II: The Japanese battleship Yamato, the largest battleship ever constructed, is sunk by American planes 200 miles north of Okinawa while en route to a suicide mission in Operation Ten-Go
1945 World War II: Visoko is liberated by the 7th, 9th, and 17th Krajina brigades from the Tenth division of Yugoslav Partisan forces
1946 Syria's independence from France is officially recognised
1948 The World Health Organization is established by the United Nations
1948 A Buddhist monastery burns in Shanghai, China, leaving twenty monks dead
1954 President Dwight D. Eisenhower gives his "domino theory" speech during a news conference
1955 Winston Churchill resigns as Prime Minister of the United Kingdom amid indications of failing health
1956 Spain relinquishes its protectorate in Morocco
1964 IBM announces the System/360
1967 Film critic Roger Ebert published his very first film review in the Chicago Sun-Times
1969 The Internet's symbolic birth date: publication of RFC 1
1971 President Richard Nixon announces his decision to increase the rate of American troop withdrawals from Vietnam
1976 Former British Cabinet Minister John Stonehouse resigns from the Labour Party
1977 German Federal prosecutor Siegfried Buback and his driver are shot by two Red Army Faction members while waiting at a red light
1978 Development of the neutron bomb is canceled by President Jimmy Carter
1980 The United States severs relations with the Islamic Republic of Iran
1983 During STS-6, astronauts Story Musgrave and Don Peterson perform the first space shuttle spacewalk
1985 Soviet leader Mikhail Gorbachev declares a moratorium on the deployment of middle-range missiles in Europe
1989 Soviet submarine Komsomolets sinks in the Barents Sea off the coast of Norway killing 42 sailors
1990 Iran Contra Affair: John Poindexter is found guilty of five charges for his part in the scandal (the conviction is later reversed on appeal)