US bases followed and assisted seizure of half of Mexico’s territory

Evidence

As Euro-American migration continued, the young nation soon seized more than half of Mexico: some 550,000 square miles of land, including all of present-day California, Utah, Nevada, and most of Arizona. … Scores of new Army bases—from Texas’s Fort Bliss to Arizona’s Fort Huachuca, from the Presidio in San Francisco to the Vancouver Barracks in Oregon Country—quickly followed, assisting in the expansion. — David Vine, Base Nation_ How U.S. Military Bases…, 60

Categorization

• XREF: Fits the reader’s prior material on settler colonialism and westward US Indian policy as domination by bases, connecting to how the book redefines where ‘abroad’ began.
• corroborated: 2 independent passages support this claim — David Vine, Base Nation_ How U.S. Military Bases…, 60