History assignment 1 By Harrison Jenkins Aug 3, 1492 The Discovery of America by Columbus Apr 19, 1775 The Battle of Lexington and Concord Jul 4, 1776 The Declaration of Independence Oct 19, 1781 The Battle of Yorktown May 25, 1787 The Constitutional Convention Mar 14, 1794 The invention of the cotton gin Period: Jul 6, 1798 to Jul 14, 1798 The Alien and Sedition Acts May 2, 1803 The Louisiana Purchase Period: Jun 18, 1812 to Feb 18, 1815 The War of 1812 Mar 3, 1820 The Missouri Compromise Dec 2, 1828 Andrew Jackson’s Election Sep 4, 1837 The Panic of 1837 to 1844 Sep 4, 1846 The Mexican-American War 1846 – 1848 Oct 4, 1854 The Spanish-American War 1854 october 1854 Apr 12, 1861 The Firing on Fort Sumter Jan 1, 1863 The Emancipation Proclamation Apr 4, 1865 Surrender at Appomattox Courthouse Apr 15, 1865 Abraham Lincoln’s Assassination Feb 24, 1868 Andrew Johnson’s Impeachment Sep 4, 1870 13th, 14th, 15th Amendments 13th (1865), 14th (1868), and 15th Amendments (1870 Sep 2, 1872 The invention of the telegraph Sep 4, 1903 The invention of the electric light, telephone, and airplane blub 1879 plane December 17, 1903 Sep 4, 1909 Theodore Roosevelt becomes president September 14, 1901 – March 4, 1909 Sep 4, 1911 The Organization of Standard Oil Trust 1870-1911