USA HISTORY

Detailed explanation-1: -The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29, 670 square mile portion of Mexico that later became part of Arizona and New Mexico.

Detailed explanation-2: -The U.S. government paid Mexico $15 million “in consideration of the extension acquired by the boundaries of the United States” and agreed to pay American citizens debts owed to them by the Mexican government.

Detailed explanation-3: -The purchase included lands south of the Gila River and west of the Rio Grande where the U.S. wanted to build a transcontinental railroad along a deep southern route, which the Southern Pacific Railroad later completed in 1881–1883. The purchase also aimed to resolve other border issues.

Detailed explanation-4: -At the end of the Mexican-American War in 1848, the United States paid $15 million to acquire territory from Mexico that eventually became the state of California, and parts of the territory that would become Arizona, New Mexico, Colorado, and Utah. Mexico also gave up any claims on Texas as part of the treaty.

Detailed explanation-5: -In 1853, Mexico agreed to sell to the United States nearly 30 million acres (45, 535 square miles) in present-day southern Arizona and New Mexico. The United States sought land in northern Mexico for a proposed southern transcontinental railroad route that would include a port on the Gulf of California.