Treaty of Guadalupe-Hidalgo
- peace treaty between the US and Mexico which ended the Mexican American war in 1848
- * Oldest treaty still in force between the United States and Mexico
- * As a result of the treaty, the United States acquired more than 500,000 square miles of valuable territory and emerged as a world power in the late nineteenth century.
- * Protected Mexican Californians
- * Promised civil and property rights
- * Promised U.S. citizenship to former Mexican citizens