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9h 38min, jun 8, 1854 y - Gadsden Purchase

Description:

The Gadsden Purchase is a 29,670-square-mile region of present-day southern Arizona and southwestern New Mexico that the United States acquired from Mexico by the Treaty of Mesilla that took effect on June 8, 1854

Added to timeline:

19 Feb 2019
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Date:

9h 38min, jun 8, 1854 y
Now
~ 172 years ago