US history timeline By ashleyngragmmer Aug 3, 1492 The Discovery of America By Colombus May 13, 1607 The Discovery of James Town Feb 10, 1754 The French Indian War Dec 16, 1773 The Boston Tea Party Apr 9, 1775 The Battle of Lexington and Concord Jul 4, 1776 The Declaration of Independence Sep 28, 1781 The Battle of Yorktown Sep 17, 1787 The Constitutional Convention Oct 28, 1794 The Invention of the Cotton Gin Jan 18, 1798 The Alien and Sedation Act Apr 30, 1803 The Louisianna Purchase Jun 18, 1812 The War of 1812 Mar 3, 1820 The Missouri Comprimise Oct 3, 1828 Andrew Jackson's Election May 24, 1830 The Invention of The Telegraph Jan 1, 1837 The Panic of 1837 Jan 1, 1839 The Trail of Tears Apr 25, 1848 The Mexican American War Jan 29, 1850 The Compromise of 1850 Apr 12, 1861 The Firing on Fort Sumter Jan 1, 1863 The Emancipation Proclamation Apr 9, 1865 Surrender at Appomattox Courthouse Apr 15, 1865 Abraham Lincon's Assassination Feb 24, 1868 Andrew Johnson's Impediment Jul 9, 1868 13th 14th 15th Amendments Jan 1, 1870 The Organization of Stranded Oil Trust Mar 10, 1876 Telephone Oct 14, 1878 The Invention of Electricity Jul 20, 1894 The Pullman and Homestead Strikes Apr 25, 1898 The Spanish American War Apr 25, 1898 The Spanish American War Sep 14, 1901 Theodore Roosevelt becomes President Sep 14, 1903 Theodore Roosevelt becomes President Dec 17, 1903 The Invention Of Airplane