US Political history By OakLeave 1775 US wins war of Independence Jul 4, 1776 Declaration of Independence 1789 US Constitution becomes effective (federal government set up) 1791 Bill of Rights 1803 Louisiana Purchase (After Napoleon has conquered Spain and taken New Spain back) 1823 Monroe Doctrine 1828 Democratic Party founded 1854 Republican Party founded 1861 Abraham Lincoln elected US President 1861 Start of the Civil War 1865 Emancipation Amendment 1865 End of the Civil War 1914 WWI begins 1917 America enters WWI 1918 End of WWI 1919 Prohibition Amendment 1919 Female Suffrage Amendment 1929 Wall Street Crash/ Great Depression begins 1933 Prohibition Scrapped 1933 The New Deal 1939 WWII begins 1939 WWII begins 1941 America enters WWII 1945 WWII ends 1947 Truman Doctrine (replaces Monroe Doctrine) 1963 JFK assassinated 1964 Civil Rights Act 1974 Nixon resigns (after Watergate) 2000 George W. Bush elected US President 2000 Iraq War begins 2001 9/11 2001 War in Afghanistan begins 2008 Obama elected US President (1st term) 2012 Obama elected US president (2nd term) 2016 Trump elected US President (1st term) 2020 Biden elected US President 2024 Trump elected US President (2nd term)