What decision by President Polk led to the Mexican-American War?(1 point) Responses Polk signed the Compromise of 1850, a compromise where the U.S. gave Texas $10 million. Polk signed the Compromise of 1850, a compromise where the U.S. gave Texas $10 million. Polk sent an envoy to Mexico to try to work out a peace agreement after the U.S. annexed Texas. Polk sent an envoy to Mexico to try to work out a peace agreement after the U.S. annexed Texas. During Polk’s presidency, Taylor’s forces beat a larger Mexican army at Buena Vista. During Polk’s presidency, Taylor’s forces beat a larger Mexican army at Buena Vista. Polk sent General Zachary Taylor to Texas, and General Taylor settled west of the Nueces River, which was disputed territory in West Texas.