Answer:
Checks and balances system I'm pretty sure.
Explanation:
The Mexican-American War was in the period 1846-1848. The main causes of the Mexican-American War were mainfest destiny (Americans believed that thye have the right to expand westward and conquer territory despite the rights of the indigenous people already living on that land), westward expansion, economics, and slavery
The spanish gov't favored the peninsulares over the creoles, often rewarding them with powerful gov't positions.
Christians wanted to regain control of the Holy Land from Muslims.
