today in history By rez 476 west Roman Empire falls Sep 20, 622 prophet mohammed arrives in medina Aug 28, 1189 third crusade began seige of Acre Sep 10, 1492 Columbus' fleet set sail west Sep 6, 1522 Magellan's expedition around globe Sep 17, 1787 US constitution signed Sep 14, 1812 napoleon Sep 7, 1813 uncle sam nickname for US Sep 19, 1876 1st carpet sweeper Aug 27, 1904 first speeding ticket issued Aug 30, 1930 Cleopatra commits suicide (wouldn't let me put picture in!!!!) Sep 12, 1940 lascaux cave paintings discovered Sep 21, 1949 mao zedong aoutlines new chinese government Sep 25, 1957 central high school integrated Sep 18, 1960 castro arrives in new york Sep 5, 1972 Israel Atheletes killed at Muich Olympics Sep 13, 1993 israel and plaestine peac accord signed Sep 11, 2001 attack on america Aug 29, 2005 hurricane Katrina slams into Gulf coast