Important Dates - US History Up Untill WWII By Rulerofu11 Apr 19, 1775 American Revolutionary War Period: Apr 19, 1775 to Sep 1, 1939 Us History Jul 4, 1776 Declaration of Independence May 14, 1787 Constitution Ratified Dec 15, 1791 Bill of Rights Jul 4, 1803 Louisiana Purchase Apr 12, 1861 Civil War Oct 20, 1898 Treaty of Paris Dec 17, 1903 Wright Brothers Fly First Plane May 4, 1904 Panama Canal Acquired Jul 28, 1914 WWI Oct 20, 1918 Battle of Argonne Forest May 20, 1927 Charles Lindbergh Flies Atlantic Solo Oct 29, 1929 Black Tuesday Oct 28, 1933 FDR's New Deal Sep 1, 1939 WWII
