Native American Indians Timeline By Seanr81 Apr 30, 1803 The Louisiana Purchase On April 30th, 1803, the 3rd United States president, Thomas Jefferson, purchased the state of Louisiana for $15 million dollars. Period: Apr 30, 1803 to Dec 31, 1874 Western Expansion Timeline Jun 10, 1806 Lewis and Clark Find the Oregon Trail Jul 31, 1830 Indian Removal Act Aug 14, 1841 Dorothea Dix Investigates Prisons Aug 29, 1848 Gold Discovered in California May 20, 1874 Gold was Found all along the West Coast
