1787 Delaware became the first state to ratify the U.S. Constitution
1917 The U.S. declared war on Austria-Hungary in World War I.
1972 America's final moon mission, Apollo 17, blasted off from Cape Canaveral.
1975 Indonesia invaded East Timor, leading to a 25-year occupation.
1988 A 6.9 magnitude earthquake hit Armenia, killing 25,000.
2001 Taliban forces fled from Kandahar, their last stronghold in Afghanistan
2002 Iraq formally declared to the UN that it had no weapons of mass destruction.
2004 Hamid Karzai was sworn in as Afghanistan's first popularly elected president.