Describe two causes of the conflict between American settlers and Mexico?

1. Texas Annexation: The annexation of Texas by the United States in 1845 was a significant factor in the conflict. Mexico considered Texas as its territory and saw the annexation as an act of aggression.

2. Border Disputes: Territorial disputes along the Texas-Mexico border further exacerbated tensions. Mexico argued that the Nueces River was the rightful boundary, while the United States claimed the Rio Grande as the border. This disagreement led to clashes between American settlers and Mexican forces in the disputed area.