Realizing that neither diplomacy nor outright bartering would achieve his expansionist ends, Polk was determined to provoke a war. He dispatched Gen. Zachary Taylor to disputed territory, between the Nueces and the Rio Grande, in southern Texas. It was an unsubtle attempt to create the first sparks. In April 1846, Taylor’s soldiers were fired upon, and Polk was thus given the pretext he needed to declare war. “American blood has been spilled on American soil,” Polk spluttered
