Answer:
The Mexican army attacked them. The main cause of the war was the westward expansion of the United States. All through the 19th century Americans believed it was their right to expand westward. At the time they believed they could conquer the people already living on the land and take it for the United States.
Explanation:
D- Advantage.
Say there is someone who is a basic person but they like the same music as you and that makes you like them more, that would be an advantage of your relationship with them.
