Question

Which of the following contributed to the outbreak of the Mexican War?

Mexican troops had invaded Washington, D.C. and New York City.
The U.S. and Mexico disagreed on the boundary between Texas and Mexico.
Mexico had not paid debts owed to the United States.
The U.S. wanted to reclaim Mexican land south of the Rio Grande.

Answer 1

The U.S. and Mexico disagreed on the boundary between Texas and Mexico.

Step-by-step explanation:

The dispute between Mexico and the United States over the border between Texas and Mexico was a major cause of the outbreak of the Mexican War. The United States said that the Rio Grande was the border while Mexico said that the border was at the Nueces River. War broke out between the two countries after Mexico sent its soldiers across the Rio Grande to attack the U.S. troops who were stationed on the north bank of the Rio Grande. Mexico attacked the U.S. troops because it felt that the U.S. had invaded its territory.

Answer 2

The U.S. and Mexico disagreed on the boundary between Texas and Mexico. Another main thing was manifest destiny