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may 1, 1819 - Onís-Adams Treaty or the Florida Purchase Treaty (1819)

Description:

The agreement between the United States of America and Spain to set a border in what is now Louisiana.

https://www.britannica.com/event/Transcontinental-Treaty

Added to timeline:

23 Nov 2020
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Date:

may 1, 1819
Now
~ 206 years ago