Answer: The correct answer is : In 1848 the Treaty of Guadalupe Hidalgo was signed, which sealed the triumph of the United States in which Mexico ceded almost half of its land to the United States, which is currently: California, Arizona, Nevada, New Mexico , Utah, a part of Colorado and Wyoming, besides the Rio Grande was recognized as the border with the United States. The people who inhabited these territories were promised US citizenship when these ceded lands became states.
