What was a significant outcome of the Mexican-American War?

• A. The U.S. established peace treaties with Mexico
• B. The acquisition of a vast amount of territory in the Southwest
• C. The end of slavery in the conquered territories
• D. The establishment of new state boundaries

Answer: (B)

The acquisition of a vast amount of territory in the Southwest was a major and impactful outcome of the Mexican-American War (1846-1848). The war resulted in the United States gaining significant land, including present-day California, Nevada, Utah, Arizona, and parts of Colorado and New Mexico. This expansion was formalized through the Treaty of Guadalupe Hidalgo, which ended the conflict and ceded approximately one-third of Mexico's territory to the United States.

This territorial gain not only fulfilled the Manifest Destiny ideology prevalent during that time, promoting the belief that it was America's divine right to expand across the continent, but it also set the stage for future economic development, state formation, and ultimately, intensified debates over slavery in the new territories. Thus, the acquisition of this land fundamentally shaped the political and social landscape of the United States in the years that followed.