Respuesta :
Option C is correct. The Louisiana Purchase of 1803 resulted in the doubling of the size of the United States.
About Louisiana Purchase
The United States purchased Louisiana from French First Republic in 1803 as part of the Louisiana Purchase. The United States supposedly bought the total of 828,000 sq mi (2,140,000 km2), or 530,000,000 acres, in Middle America for fifteen million dollars, or around eighteen dollars per square mile. Towards the exclusion of many other colonial powers, the United States essentially purchased the "preemptive" right to acquire "Indian" territories by treaties or invasion for the bulk of this region, which was mostly under Native American authority.
From 1699 until Spain seized possession of Louisiana in 1762, the area was governed by the Kingdom of France.
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