Dashed left edge = started before June 1854 ·
Dashed right edge = ongoing beyond June 1854
Events in June 1854 1
1854Gadsden Purchase finalizedUS acquires southern Arizona and New Mexico from MexicoThe United States and Mexico completed the Gadsden Purchase, transferring a strip of territory in present-day southern Arizona and New Mexico to the US for $10 million. The land was sought chiefly for a southern transcontinental railroad route.