Which of these was a major cause of the Mexican-American War?

In 1846, a dispute over the border between Texas and Mexico resulted in armed conflict, and the Mexican–American War began. 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.

Explanation:

answer; the mayans and

north east because it has more forest