How did the treaty of Guadalupe hidalgo affect the US?

The Treaty of Guadalupe Hidalgo, signed in 1848, marked the end of the Mexican-American War and resulted in the U.S. acquiring approximately 525,000 square miles of territory, including present-day California, Arizona, New Mexico, Nevada, Utah, and parts of Colorado and Wyoming. This expansion significantly increased the size of the United States and intensified debates over slavery in the newly acquired territories, contributing to sectional tensions. Additionally, the treaty established the Rio Grande as the border between Texas and Mexico, shaping future U.S.-Mexico relations. Overall, it played a crucial role in the westward expansion and Manifest Destiny ideology.