* Third Treaty of San Ildefonso of 1800 between Spain and France, by which Spain returned Louisiana to France.
* Third Treaty of San Ildefonso of 1800 between Spain and France, by which Spain returned Louisiana to France
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* Third Treaty of San Ildefonso of 1800 between Spain and France, by which Spain returned Louisiana to France.
* Third Treaty of San Ildefonso of 1800 between Spain and France, by which Spain returned Louisiana to France
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