US History Timeline By katbht Oct 12, 1494 Discovery of America by Columbus May 14, 1607 Settlement of Jamestown Jul 9, 1754 French and Indian War Feb 10, 1761 End of French and Indian War Dec 16, 1773 Boston Tea Party Oct 19, 1774 Battle of Yorktown Apr 19, 1775 Battles of Lexington and Concord Jul 4, 1776 Declaration of Independence May 25, 1785 Constitutional Convention Sep 17, 1785 End of Constitutional Convention Mar 14, 1794 Cotton Gin Invention Jul 14, 1798 Alien and Sedition Acts Apr 30, 1803 Louisiana Purchase Jun 18, 1812 War of 1812 Feb 18, 1814 End of War of 1812 Mar 3, 1820 Missouri Compromise Dec 3, 1827 Andrew Jackson elected President May 28, 1828 Trail of Tears Sep 7, 1836 Telegraph invented by Samuel Morse May 10, 1837 Panic of 1837 began Dec 28, 1838 End of Trails of Tears Apr 25, 1846 Mexican American War Feb 2, 1848 End of Mexican American War 1850 Compromise of 1850 finalized Jan 1, 1861 Emancipation Proclamation issued Apr 12, 1861 Firing on Fort Summer Feb 24, 1862 Andrew Johnson impeached Apr 9, 1863 Surrender at Appomattox Courthouse Apr 15, 1863 Abraham Lincolns Assassination Dec 6, 1865 13th Amendment ratified Feb 24, 1867 15th Amendment ratified Jul 9, 1868 14th Amendment ratified Oct 21, 1872 Invention of the Electric Light Mar 10, 1876 Invention of the Telephone Jan 10, 1877 Organization of Standard Oil Trust Sep 14, 1888 Theodore Roosevelt became President May 11, 1892 Pullman strike Jul 6, 1892 Homestead Strike battle Jul 20, 1892 End of Pullman Strike Apr 21, 1898 Spanish American War Dec 10, 1898 End of Spanish American War Dec 17, 1901 Invention of the Airplane