Which statement best describes the united states' changing role in the world during the twentieth century?
a/it changed from a great power into an isolationist nation, much like japan.
b/it was vastly richer, larger, and more powerful than it had been one hundred years before.
c/its losses during the war of 1812 substantially weakened its power for the next hundred years.
d/its strict economic controls resulted in a widespread return to mercantilism.
e/it became a military superpower in the world but lacked a strong economy.