By what proportion did the size of the united states increase as a result of the louisiana purchase

In the year 1803, the United States of America purchased the approximately 828 million square miles of territory from France, doubling its territory. Because of Thomas Jefferson's purchase of the Louisiana territory, 15 states were added in the territory of America. It stretched from the Canadian border in the north to the Gulf of Mexico in the south and from the Rocky Mountains in the west to the Mississippi River in the East.

Louisiana purchase was known as the biggest real estate deal by the united states. Thomas Jefferson was the president at the time of Louisiana purchase. The Louisiana territory was owned by the France before the purchase. The Louisiana purchase doubled the size of the United states. The united states need an important city of New Orleans and the port in Louisiana.