Manifest Destiny Timeline By wlehrer1 Apr 8, 1830 Texans outnumber Mexicans 3 to 1 Oct 2, 1835 The Texan War of Independence begins Mar 2, 1836 Sam Huston declares Texas to be an independent nation Mar 29, 1841 John Tyler elected president Jan 17, 1842 Treaty of Webster Ashburton is signed defineing the Maine Canada boarder ends hostilities Mar 29, 1845 Polk elected president Apr 24, 1846 Start of Mexican War Feb 17, 1847 Major US victory at Buena Vista Sep 17, 1847 Mexico City capured effective end to the war Feb 2, 1848 Treaty of Guadalupe Hidalgo Mar 29, 1849 Zachary Taylor elected president Apr 19, 1850 Clayton Bulwer Treaty Apr 25, 1854 Gadsden Purchase