US History A Timeline By meldbitter Oct 12, 1492 Discovery of America by Columbus 1607 Settlement of Jamestown 1754 French and Indian War Dec 16, 1773 Boston Tea Party Apr 19, 1775 Battle of Lexington and Concord Jul 4, 1776 Declaration of Independence Sep 28, 1781 Battle of Yorktown May 25, 1787 Constitutional Convention Mar 14, 1794 Invention of the cotton gin Jul 6, 1798 Alien and Sedition Acts 1802 Electric Light invented Apr 30, 1803 Louisiana Purchase Jun 18, 1812 The War of 1812 Mar 2, 1820 Missouri compromise Oct 31, 1828 Andrew Jackson's Election 1831 Trail of Tears May 10, 1837 Panic of 1837 May 24, 1844 Invention of the telegraph 1st message "What hath God wrought?" was sent Apr 25, 1846 Mexican-American War Sep 18, 1850 Compromise of 1850 Apr 12, 1861 Fining in Fort Sumter Jan 1, 1863 Emancipation Proclamation 1863 Organization of Standard Oil Trust 1865 13th, 14th, and 15th Amendments Apr 9, 1865 Surrender at Appomattox Courthouse Apr 15, 1865 Abraham Lincoln's Assassination Feb 24, 1868 Andrew Johnson's Impeachment Mar 7, 1876 Telephone Invention Jul 6, 1892 Pullman and Homestead Strikes Apr 21, 1898 The Spanish-American War Sep 14, 1901 Theodore Roosevelt becomes president Dec 17, 1903 Airplane Invention