USA HISTORY

Detailed explanation-1: -Under the Treaty of Guadalupe Hidalgo, which settled the Mexican-American War, the United States gained more than 500, 000 square miles (1, 300, 000 square km) of land, expanding U.S. territory by about one-third.

Detailed explanation-2: -Under the terms of the treaty negotiated by Trist, Mexico ceded to the United States Upper California and New Mexico. This was known as the Mexican Cession and included present-day Arizona and New Mexico and parts of Utah, Nevada, and Colorado (see Article V of the treaty).

Detailed explanation-3: -Victory in the Mexican War gave the United States a vast new territory that stretched from California to New Mexico. As Calhoun had feared, the question of slavery in these territories quickly developed into an angry wedge between the North and South.

Detailed explanation-4: -It ended the war, and Mexico recognized the cession of present-day California, Nevada, and Utah as well as parts of present-day Arizona, Colorado, New Mexico, and Wyoming.

Detailed explanation-5: -The war and treaty extended the United States to the Pacific Ocean, and provided a bounty of ports, minerals, and natural resources for a growing country. The abundance of lands also produced debates about extending slavery into the West, a dispute that would help spark a nation-defining civil war.