They gained California I think
No.
California and the American Southwest.
America won the war and got the land they wanted.
It gained California and the American Southwest.
They gained the annexation of Texas.
In the Mexican Cession of the Treaty of Guadalupe Hidalgo which ended the Mexican American War.
America just fought Mexico to gain more land.
To gain Arizona and New Mexico from Mexico
The Mexican cession was the outcome of the Mexican American war.
Utah became a territory in 1850 folloewing the Mexican-American War
California, Arizona, Nevada, Utah and New Mexico.
by the Treaty of Guadalupe Hidalgo, which ended the Mexican-American War.