Answer :
Final answer:
The Treaty of Guadalupe-Hidalgo resulted in significant territorial gains for the U.S. and established new boundaries, but it did not lead to the expansion of slavery into Mexico.
Explanation:
Slavery expands into Mexico is not an outcome of the Treaty of Guadalupe-Hidalgo. The treaty, signed in 1848, resulted in the U.S. becoming a transcontinental nation for the first time, acquiring territories like California, New Mexico, and Arizona, and establishing boundaries such as the Rio Grande River as the southern border of Texas. This expansion marked a significant shift in U.S. territorial holdings and furthered the doctrine of Manifest Destiny.
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