172 years ago today, New Mexico became a U.S. territory. The New Mexico Territory was part of the biggest congressional deal in American history and understanding that deal and how it relates to ...

affairs in new-mexico.; the abandonment of forts the rebels taking formal possession of the territory. share full article. sept. 21, 1861.

NEW-MEXICO.; A JOURNEY TO THE WESTERN TERRITORY. ... The New York Times Archives. See the article in its original context from September 10, 1874, Page 4 Buy Reprints. View on timesmachine.

The Treaty of Guadalupe Hidalgo sealed the American victory in 1848. In return for $15 million and the assumption of Mexican debts to Americans, Mexico gave up its hold over New Mexico and California.