September 9 events in history

337 Constantine II, Constantius II, and Constans succeed their father Constantine I as co-emperors. The Roman Empire is divided between the three Augusti
1000 Battle of Svolder, Viking Age
1087 William Rufus becomes King of England, taking the title William II, (reigned until 1100)
1141 Yelü Dashi, the Liao dynasty general who founded the Qara-Khitai, defeats the Seljuq and Kara-Khanid forces at the Battle of Qatwan
1513 James IV of Scotland is defeated and dies in the Battle of Flodden, ending Scotland's involvement in the War of the League of Cambrai
1543 Mary Stuart, at nine months old, is crowned "Queen of Scots" in the central Scottish town of Stirling
1561 The ultimately unsuccessful Colloquy at Poissy opens in an effort to reconcile French Catholics and Protestants
1739 Stono Rebellion, the largest slave uprising in Britain's mainland North American colonies prior to the American Revolution, erupts near Charleston, South Carolina
1776 The Continental Congress officially names its new union of sovereign states the United States
1791 Washington, D.C., the capital of the United States, is named after President George Washington
1801 Alexander I of Russia confirms the privileges of Baltic provinces
1839 John Herschel takes the first glass plate photograph
1850 California is admitted as the thirty-first U.S. state
1850 The Compromise of 1850 transfers a third of Texas's claimed territory (now parts of Colorado, Kansas, New Mexico, Oklahoma, and Wyoming) to federal control in return for the U.S. federal government assuming $10 million of Texas's pre-annexation debt
1855 Crimean War: The Siege of Sevastopol comes to an end when Russian forces abandon the city
1863 American Civil War: The Union Army enters Chattanooga, Tennessee
1886 The Berne Convention for the Protection of Literary and Artistic Works is finalized
1914 World War I: The creation of the Canadian Automobile Machine Gun Brigade, the first fully mechanized unit in the British Army
1922 The Greco-Turkish War effectively ends with Turkish victory over the Greeks in Smyrna
1923 Mustafa Kemal Atatürk, the founder of the Republic of Turkey, founds the Republican People's Party
1924 Hanapepe massacre occurs on Kauai, Hawaii
1926 In the United States the National Broadcasting Company is formed
1939 Burmese national hero U Ottama dies in prison after a hunger strike to protest Britain's colonial government
1939 World War II: The Battle of Hel begins, the longest-defended pocket of Polish Army resistance during the German invasion of Poland
1940 George Stibitz pioneers the first remote operation of a computer
1942 World War II: A Japanese floatplane drops incendiary bombs on Oregon
1943 World War II: The Allies land at Salerno and Taranto, Italy
1945 Second Sino-Japanese War: The Empire of Japan formally surrenders to China
1948 Kim Il-sung declares the establishment of the Democratic People's Republic of Korea
1956 Elvis Presley appears on The Ed Sullivan Show for the first time
1965 The United States Department of Housing and Urban Development is established
1965 Hurricane Betsy makes its second landfall near New Orleans, leaving 76 dead and $1.42 billion ($10–12 billion in 2005 dollars) in damages, becoming the first hurricane to cause over $1 billion in unadjusted damage
1966 The National Traffic and Motor Vehicle Safety Act is signed into law by U.S. President Lyndon B. Johnson
1969 In Canada, the Official Languages Act comes into force, making French equal to English throughout the Federal government
1970 A British airliner is hijacked by the Popular Front for the Liberation of Palestine and flown to Dawson's Field in Jordan
1971 The four-day Attica Prison riot begins, eventually resulting in 39 dead, most killed by state troopers retaking the prison
1991 Tajikistan declares independence from the Soviet Union
1993 The Palestine Liberation Organization officially recognizes Israel as a legitimate state
1999 Sega releases the first 128-bit video game console, the Dreamcast
2001 Ahmad Shah Massoud, leader of the Northern Alliance, is assassinated in Afghanistan by two al-Qaeda assassins who claimed to be Arab journalists wanting an interview