Question

By what proportion did the size of the United States increase as a result of the purchase

Answer 1

The purchase of Alaska added 586,412 square miles to the U.S.

Answer 2

Doubled the size

Step-by-step explanation:

The Louisiana Purchase happened in 1803 and added 828 square miles to the US territory, doubling the size of the country. The US paid U$ 11,250,000 to France for the territory and soon after, the expansion westward started.