Treaty of Queretaro

The Treaty of Queretaro was signed in 1848 and marked the end of the Mexican-American War. It established the terms for peace between Mexico and the United States, with Mexico ceding a large portion of its northern territory—what is now California, Arizona, New Mexico, and other states—to the U.S. The treaty also set the border between the two countries along the Rio Grande River. In exchange, the U.S. paid Mexico $15 million. This treaty significantly expanded U.S. territory and finalized the borders between the two nations, shaping the southwestern U.S. and northern Mexico today.