In 1848, the United States and Mexico signed the Treaty of Guadalupe Hidalgo ending the Mexican American War. In the treaty, the Mexican government gave the United States the following: California and the province of New Mexico known as the Mexican Cession; set the Rio Grande River as the southern border of the United States; and in return the U.S. paid the Mexican government $15 million for the land. The Mexican Cession eventually was carved up into several states that included present-day Arizona, New Mexico, and parts of Utah, Nevada, and Colorado. This treaty helped the United States fulfill its Manifest Destiny goal.