Tyler-Disunion

Main

American Claims to Oregon

1792

Mexican Independence from Spain

1821

Alamo Attack

February 23, 1828

Western Migration

1840 - 1900

Americans moved in droves seeking a better chance and more space

William H Harrison Elected

1840

elected on strength of his military record

Americans Call Oregon Home

1840

John Tyler succeeds Harrison

1841

Webster-Ashburton Treaty

1842

Annexation of Texas

1845

Mexico breaks off relations with US

1845

Buchanan-Pakenham Treaty

1846

Extends 49th parallel through Oregon

Mexican-American War

1846 - 1848

Congress declares War on Mexico

May 13, 1846

Buchanan-Pakenham Treaty

June 15, 1846

Britain extends 49th parallel in order to divide Oregon

Discovery of Gold in California

1848

Treaty of Guadalupe-Hidalgo

February 2, 1848

South faces growing sense of economic crisis

1870