Excellent Events of the Era By andrewrichardson Oct 20, 1803 Louisiana Purchase 1804 Lewis and Clark Expedition Apr 12, 1861 Battle of Fort Sumter Jul 21, 1861 Battle of Bull Run May 20, 1862 Homestead Act Jun 25, 1862 7 Days Battle Jul 24, 1862 Second Battle Of Bull Run Sep 17, 1862 Battle of Antietam Sep 22, 1862 Emancipation Proclamation Jul 1, 1863 Battle of Gettysburg 1865 Black Codes Jul 9, 1868 14th Amendment May 10, 1869 Transcontinental Railroad 1870 15th Amendment 1873 Gilded Age Mark Twain 1881 American Red Cross Creation 1887 Dawes Act 1913 16th Amendment 1919 18th Amendment 1920 19th Amendment