Answer:
I agree with the statement as after the Treaty in Paris in 1783 United States received territory east of Mississippi river, which actually doubled the size of state territory.
Explanation:
After peace treaty was signed in Paris, not only that United States were formally recognized by the British Crown, but they also gained new territories. Among them, the most important territory was the one gained in the area east of Mississippi. This is important because it opened a road for further expansion towards the west.