In which John Green teaches you about the Mexican-American War in the late 1840s, and the expansion of the United States into the western end of North America. In this episode of Crash Course, US territory finally reaches from the...

The Treaty of Guadalupe Hidalgo in 1848 transferred 55% of Mexican territory to the U.S., and ignited a fierce debate over slavery in these new lands.

The exciting story of the State of California comes alive in this informational and entertaining video program. Filled with archival footage, rare photos and animated maps combined with brilliant HD video, this program will teach...

National Expansion (1832-1848) American democracy has a lineage of written records that we can trace to show the development of our nation, and how each document builds on those before it to make our foundation of freedom stronger. In...