Westward Expansion By robbydaiello Oct 20, 1803 Jefferson Purchases Louisiana Territory from French Feb 23, 1836 Battle of the Alamo Begins Jan 24, 1848 Gold Discovered Near Sutter's Mill, California Feb 2, 1848 Treaty of Guadalupe Hidalgo Signed Jan 29, 1850 Compromise of 1850 Proposed Dec 30, 1853 Gadsen Purchase Completed