Chapters 12-15 - Manifest Destiny to Secession By kingstone999 Jan 1, 1819 Adams Onis Treaty Period: Jan 1, 1819 to Dec 31, 1861 Chapter 12 Jan 1, 1830 Joseph Smith found the Mormon Church Feb 12, 1836 Battle at the Alamo Feb 12, 1845 Texas Annexation Feb 12, 1845 James K. Polk elected President Feb 12, 1846 Mormon migratioin to Utah Feb 12, 1846 Boudary set between Oregon and Canada Feb 12, 1847 Whitman Mission Attacked by the Cayuse Feb 12, 1848 Treaty of Guadelupe Hidalgo Feb 12, 1848 Sutter's Mill Gold Strike Feb 12, 1853 Gadsen Purchase