Timeline By vaughnlieu Period: Apr 30, 1789 to Mar 4, 1797 George Washington Period: Jan 1, 1804 to Jan 1, 1806 Lewis and Clarke Expedition Period: Mar 4, 1861 to Apr 15, 1865 Abraham Lincoln Period: Jul 28, 1914 to Nov 11, 1918 World War I Dec 9, 1934 Adolf Hitler Becomes Fueher of Germany Period: Sep 1, 1939 to Sep 2, 1945 World War II Dec 7, 1941 Pearl Harbor Dec 8, 1945 U.S. A-bombs Japan Period: Jan 20, 1961 to Nov 22, 1963 John Kennedy Nov 22, 1963 Kennedy Assassinated Period: Dec 9, 1966 to Dec 10, 1969 Hippie Movement Period: Jan 20, 2001 to Jan 20, 2009 George W. Bush Sep 11, 2001 9/11 Dec 9, 2003 iraq war Period: Jan 1, 2009 to Jan 1, 2013 Barack Obama