1800s-1876 By AlexaAllen12345 1803 List of Purchases Made by Meriwether Lewis in Preparation for the Expedition to the West Apr 30, 1803 Louisiana Purchase Period: Jun 18, 1812 to Feb 18, 1815 War of 1812 1816 The Telegraph Period: Apr 12, 1861 to Apr 9, 1865 American Civil War Apr 16, 1862 The District of Columbia Emancipation Act Jan 1, 1863 Emancipation Proclamation Jan 31, 1865 13th Amendment to the U.S. Constitution: Abolition of Slavery 1867 Barbed Wire Aug 1, 1868 Check for the Purchase of Alaska