North America 1846: Conquest of California & New Mexico
18 August 1846
18 Aug 1846
Conquest of California & New Mexico
2 Oct 1843 Oregon Dispute
29 Dec 1845 Annexation of Texas
13 May 1846 Outbreak of the Mexican–American War
15 Jun 1846 Oregon Treaty
18 Aug 1846 Conquest of California & New Mexico
19 Nov 1846 Northern Mexican Theater
9 Mar 1847 Siege of Veracruz
14 Sep 1847 Battle for Mexico City
2 Feb 1848 Treaty of Guadalupe Hidalgo
11 Feb 1849 California Gold Rush
9 Sep 1850 Compromise of 1850
14 Oct 1852 Opening up the West
30 Dec 1853 Gadsden Purchase
6 Dec 1855 Bleeding Kansas
2 Apr 1857 Filibuster War
29 Sep 1858 Mexican Reform War
18 Oct 1859 Raid on Harpers Ferry
At the outbreak of the Mexican-American War, the US had sent a cavalry force to cross the continent and a naval squadron into the Pacific, intending both forces to meet in the Mexican territory of Alta California. However the local Mexican governors offered minimal resistance and both California and the neighboring territory of New Mexico fell well before the US forces could unite.
