Answer:
The Mexican War
Explanation:
Mexican-American War, also called Mexican War, Spanish Guerra de 1847 or Guerra de Estados Unidos a Mexico war between the United States and Mexico (April 1846–February 1848)
The proof to support your argument.
Monsters are correlated with negativity, the evil inside of a person. The hero usually represents the will to fight back and keep that evil from hurting anyone. It's mostly opinion but that's just what I think I hope it gives you some ideas!