Eventos el March 31 41
Año 307
After divorcing his wife Minervina, Constantine marries Fausta, daughter of the retired Roman Emperor Maximian.
Año 627
Battle of the Trench: Muhammad undergoes a 14-day siege at Medina (Saudi Arabia) by Meccan forces under Abu Sufyan.
Año 1146
Bernard of Clairvaux preaches his famous sermon in a field at Vézelay, urging the necessity of a Second Crusade. Louis VII is present, and joins the Crusade.
Año 1492
Queen Isabella of Castile issues the Alhambra Decree, ordering her 150,000 Jewish and Muslim subjects to convert to Christianity or face expulsion.
Año 1717
A sermon on "The Nature of the Kingdom of Christ" by Benjamin Hoadly, the Bishop of Bangor, provokes the Bangorian Controversy.
Año 1774
American Revolutionary War: The Kingdom of Great Britain orders the port of Boston, Massachusetts closed pursuant to the Boston Port Act.
Año 1822
The massacre of the population of the Greek island of Chios by soldiers of the Ottoman Empire following an attempted rebellion, depicted by the French artist Eugène Delacroix.
Año 1854
Commodore Matthew Perry signs the Convention of Kanagawa with the Tokugawa Shogunate, opening the ports of Shimoda and Hakodate to American trade.
Año 1899
Malolos, capital of the First Philippine Republic, is captured by American forces.
Año 1906
The Intercollegiate Athletic Association of the United States (later the National Collegiate Athletic Association) is established to set rules for college sports in the United States.
Año 1913
The Vienna Concert Society rioted during a performance of modernist music by Arnold Schoenberg, Alban Berg, Alexander von Zemlinsky, and Anton von Webern, causing a premature end to the concert due to violence; this concert became known as the Skandalkonzert.
Año 1917
The United States takes possession of the Danish West Indies after paying $25 million to Denmark, and renames the territory the United States Virgin Islands.
Año 1918
Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed.
Año 1930
The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
Año 1931
A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
Año 1933
The Civilian Conservation Corps is established with the mission of relieving rampant unemployment in the United States.
Año 1942
World War II: Japanese forces invade Christmas Island, then a British possession.
Año 1945
World War II: A defecting German pilot delivers a Messerschmitt Me 262A-1, the world's first operational jet-powered fighter aircraft, to the Americans, the first to fall into Allied hands.
Año 1949
The Dominion of Newfoundland joins the Canadian Confederation and becomes the 10th Province of Canada.
Año 1951
Remington Rand delivers the first UNIVAC I computer to the United States Census Bureau.
Año 1957
Elections to the Territorial Assembly of the French colony Upper Volta are held. After the elections PDU and MDV form a government.
Año 1958
In the Canadian federal election, the Progressive Conservatives, led by John Diefenbaker, win the largest percentage of seats in Canadian history, with 208 seats of 265.
Año 1959
The 14th Dalai Lama, crosses the border into India and is granted political asylum.
Año 1964
A coup d'état in Brazil establishes a military government, under the aegis of general Castelo Branco.
Año 1966
The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
Año 1980
The Chicago, Rock Island and Pacific Railroad operates its final train after being ordered to liquidate its assets because of bankruptcy and debts owed to creditors.
Año 1985
The first WrestleMania, the biggest wrestling event from the WWE (then the WWF), takes place in Madison Square Garden in New York City.
Año 1990
Approximately 200,000 protesters take to the streets of London to protest against the newly introduced Poll Tax.
Año 1991
Georgian independence referendum, 1991: Nearly 99 percent of the voters support the country's independence from the Soviet Union.
Año 1992
The USS Missouri, the last active United States Navy battleship, is decommissioned in Long Beach, California.
Año 1995
Selena is murdered by her fan club's president Yolanda Saldivar at a Days Inn in Corpus Christi, Texas after accusations of Saldivar embezzling money from Selena's fan club.
Año 2004
Iraq War in Anbar Province: In Fallujah, Iraq, four American private military contractors working for Blackwater USA, are killed after being ambushed.