Final answer:
The Treaty of Guadalupe Hidalgo ended the Mexican-American War.
Step-by-step explanation:
The Treaty of Guadalupe Hidalgo brought an end to the Mexican-American War. The war was fought between the United States and Mexico from 1846 to 1848. The treaty, signed on February 2, 1848, established the boundaries between the two countries and ceded a significant portion of Mexican territory to the United States.
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