Westward expansion or Manifest destiny was the belief that the United States was destined to own the land from modern day Maine to California and everything in between. In the mid-1800’s this attitude caused more than a few problems with Mexico it caused a war. The Mexican-American war was a two year long war over territory and “shedding American blood upon the American soil.” One characteristic of a justified war is having clear, good intentions. Was the Mexican-American war a just war? The Mexican-American war started when President James, K, Polk offered Mexico 30 million dollars to purchase New Mexico and California. Mexico refused this offer. After Mexico’s refusal, President Polk sent 4,000 soldiers to the Rio Grande river line near
