Why did the americans what yi aquire californa?

Mexican american war and manfest destany read your history book

There were multiple reasons for acquiring over California like:

A) California was rich in resources and was located against a major body of water.

B.) US Army wanted to defeat Mexico in the war.

C.) Soil was fertile and supportive for almost every kind of Agriculture.

Hope this helps!

The answer is society was a caste like system with poor whites at the bottom of the white social ladder.