History of United States expansionism
Treaty of Guadalupe Hidalgo
The Treaty of Guadalupe Hidalgo officially ended the Mexican–American War (1846–1848). It was signed on the 2nd of February 1848 in the town of Guadalupe Hidalgo. After the defeat of its army and the fall of the capital in September 1847, Mexico entered into peace negotiations with the U.S. envoy, Nicholas Trist.
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Wagon train
A wagon train is a group of wagons traveling together. Before the extensive use of military vehicles, baggage trains followed an army with supplies and ammunition. In the American West, settlers traveling across the plains and mountain passes in covered wagons banded together for mutual assistance.