Mormon History, Mar 10, 1848

Congress approves the Treaty of Guadalupe Hidalgo, which cedes much of Mexico's western territory, including Utah, to the United States.

[source: Whitney, Helen, Timeline: The Early History of the Mormons, A Frontline and American Experience Co-Production, //www.pbs.org/mormons/timeline/]
[Whitney, Helen, Timeline: The Early History of the Mormons, A Frontline and American Experience Co-Production, //www.pbs.org/mormons/timeline/]