Frontier Development By j_shifflet Jul 13, 1787 Northwest Ordinance Period: Jul 13, 1787 to Jan 1, 1900 Northwest Ordinance to 1890's Apr 30, 1803 Louisiana Purchase May 14, 1804 Lewis and Clark Expedition Sep 23, 1806 Lewis and Clark Return Sep 27, 1821 Mexico Gains Independence Oct 26, 1825 Erie Canal Opens May 28, 1830 Indian Removal Act May 14, 1836 Republic of Texas Established May 22, 1843 Oregon Trail is Made Jul 24, 1847 Mormons Reach Salt Lake Valley Jan 24, 1848 Gold Rush Begins Sep 26, 1856 First Mormon Handcart Company Reaches Newly Established Salt Lake City Apr 3, 1860 Pony Express Opens Oct 24, 1861 First Telegraph Sent Across the Country May 20, 1862 Homestead Act May 10, 1869 Golden Spike Driven into Railroad Jul 18, 1883 Buffalo Bill's Wild West Show Jun 1, 1890 1890 Census--Frontier no Longer Exists frontier no longer existed
