Question

How did the territory acquired by the United States at the end of the Mexican American War caused controversy in the United States?

Answer 1

Controversy over slavery

Step-by-step explanation:

The Treaty of Guadalupe Hidalgo ended the Mexican American war and gave the U.S. land, including California. The effects of this treaty were opposed by some, mostly by Whigs. It resulted in more debates for the expansion of slavery and what states would be free for the time being. It contributed to tension between the North and South prior to the Civil War. :)