Question: why did the united states go to war with mexico in 1846 quizlet?
Answer: The belief that the U.S. was destined to secure territory from "sea to sea," from the Atlantic to the Pacific Ocean. ... War with Mexico which began in 1846 when the U.S. annexed Texas and Mexico challenged the Border. Battles were fought in Texas, and Mexico was invaded from the Atlantic Ocean by General Winfield Scott.