american independence By judbud23 Jan 1, 1775 American War of Independence Aug 18, 1803 Louisiana Purchase Apr 4, 1829 Jackson Administration Aug 18, 1846 Mexican-American War Aug 18, 1917 American Entry into the First War Feb 2, 1933 Roosevelt Administration Mar 3, 1941 American Entry into the Second World War Aug 18, 1963 Kennedy Assassination Aug 18, 1963 American Entry into the Vietnam War Oct 10, 1969 Apollo 11 Moon Landing