1800-1876 Major Events By briannalawson2025 Apr 24, 1799 U.S. Library of Congress founded 1800 Thomas Jefferson Elected President Apr 30, 1800 Louisiana Purchase signed 1820 Monroe Doctrine 1828 Andrew Jackson elected President Period: 1831 to 1850 "Trail of Tears" 1861 Civil War starts Period: 1861 to 1865 Abraham Lincoln as President 1863 Gettysburg Address Mar 7, 1876 Alexander Graham Bell invents telephone