Shane Hahn's Chronology - Westward Expansion from 1803-1889 By shahn Apr 30, 1803 Louisiana Purchase May 14, 1804 Lewis and Clark Expedition Feb 22, 1819 Adams-Onis Treaty, Spanish Cession Jan 26, 1820 Missouri Compromise Dec 2, 1823 Monroe Doctrine Oct 26, 1825 Building of the Erie Canal May 28, 1830 Indian Removal Act Apr 21, 1836 Texas Revolution Apr 1, 1843 Oregon Trail Jul 1, 1845 John L. O'Sullivan coined the term Manifest Destiny Dec 29, 1845 Annexation of Texas Jun 15, 1846 Oregon Treaty, Seperated the U.S. and Britain along the 49th Parallel Jul 24, 1847 Brigham Young leads Mormons to Utah Jan 24, 1848 California Gold Rush Feb 2, 1848 Treaty of Guadalupe Hidalgo, Gave the U.S. the Southern States Dec 30, 1853 Gadsden Purchase, Present Day Arizona & New Mexico May 30, 1854 Kansas-Nebraska Act May 20, 1862 Homestead Act May 10, 1869 Transcontinental Railroad Completion Feb 22, 1889 Enabling Act of 1889, added four new states Apr 22, 1889 Oklahoma Land Run of 1889
