7h 45min, feb 2, 1848 y - Treaty of Guadalupe Hidalgo
Description:
The treaty added an additional 525,000 square miles to United States territory, including the land that makes up all or parts of present-day Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming.
Added to timeline:
Date:
7h 45min, feb 2, 1848 y
Now
~ 177 years ago
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