The American Civil War, 1840–1877 · THE MAP IN
Map of the United States in December 1846
Santa Fe, California, Monterrey
The United States in December 1846: Santa Fe, California, Monterrey. The map shows who held what: The Union, Mexico, 1840–54.
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On the ground
- California and New Mexico under US military government — Kearny took Santa Fe without a fight in August 1846; the Californios and the Taos rising of January 1847 fought back
- northeastern Mexico under Taylor’s army — Matamoros, Monterrey, Saltillo and the Tampico coast
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