What was an effect of the war between the United States and Mexico?
A. The U.S. gained new states such as California, New Mexico, and Utah.
B. Mexico tried to annex Texas as its own territory.
C. The U.S. expanded the territory of Missouri.
D. The United States attacked Mexican citizens in Texas.

Respuesta :

The answer is A because I know

Answer: A. The U.S. gained new states such as California, New Mexico, and Utah.

Explanation: The Treaty of Guadalupe Hidalgo in 1848 officially ended the war between the United States and Mexico. This treaty required Mexico to give up more than half of its territory, the acquired territory is modern-day Texas, California, Nevada, Utah, Arizona, and New Mexico.