What caused and what ended the Mexican War?
Some leading causes of the Mexican War were: • Texan Annexation: Mexico had previously warned that would consider annexation an act of war. When the annexation to place, Mexico actually did not declare war, but broke diplomatic relations. • Boundary Disputes: Whether Texas was an American state or just a rebellious Mexican Province, the United states continued to maintain the fact that the Rio Grande was Texas’s southern border – Mexico insisted that it was actually a river much farther north. • Pacific Ocean Boundaries: President Polk was determined to expand the country so that its western border became the Pacific Ocean. He did succeed in this. Cause of the End of the Mexican War: The Treaty of Guadalupe Hidalgo, signed by Nicholas Trist on February 2, 1848, brought an end to the Mexican War, gave the U.S. undisputed control of Texas, while establishing the southern border of Texas as Rio Grande River, and added to the United States the present-day states of Nevada, California, Utah
