Political map of North America & the Caribbean on 30 Dec 1853 (Manifest Destiny: Gadsden Purchase), showing the following events: Washington Territory; Santa Anna's last presidency; Republic of Lower California; Gadsden Purchase.

Gadsden Purchase

Manifest Destiny

North America 1853.123

Gadsden Purchase

Mexican-American War, Oregon dispute (30 December 1853)

Historical Map of North America & the Caribbean

Even as California was being accepted into the Union, a new dispute was breaking out between the US and Mexico. The map used for the Treaty of Guadalupe Hidalgo had been inaccurate, meaning that the central part of the US-Mexican boundary was ambiguous. To solve this issue, the US ambassador James Gadsden arranged for the purchase of the disputed region, signing the Gadsden Purchase treaty with Mexico in 1853.

Main Events

Washington Territory

United States creates Washington Territory from the northern half of Oregon Territory

Santa Anna's last presidency

With the support of rebellious conservatives, the exiled former dictator Antonio Lopez de Santa Anna returns to Mexico and retakes control of the government

Republic of Lower California

US-born filibuster William Walker and his followers capture La Paz, Baja California Territory in the Mexican Republic, and establish the Republic of Lower California; they are soon forced to flee to Cabo San Lucas and then Ensenada, before withdrawing from the region completely

Gadsden Purchase

James Gadsden, the United States ambassador to the Mexican Republic, signs the Gadsden Purchase treaty with the Mexican government under Antonio Lopez de Santa Anna, ceding 76,800 square km of land in what is now Arizona and New Mexico to the US; the Purchase is ratified and approved the following year

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