The Third Treaty of San Ildefonso<span> was a </span>treaty<span> between France and Spain in which Spain returned the colonial territory of Louisiana to France. The </span>treaty<span> was concluded on 1 October 1800 between Louis Alexandre Berthier representing France and Don Mariano Luis de Urquijo for Spain. the answer is c.
</span>
Answer: C
Explanation: I took the test got it right.
