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I would say B or C! They both are true
Causes of the war 1812 included British attempt to restrict U.S trade, the Royal Navy's impressment of American seamen an America's desire to expand it's territory. The United States suffered many costly defeats at the hands of the British, Canadian and Native American troops over the course of the war. Including capture and burning of the nation's capital, Washington, D.C in August 1814. The war lasted 2years and 8months
you can find the rest of what your looking for on
https://www.history.com/topics/war-of-1812
Theories about what caused the Classic Maya collapse have ranged from overpopulation to ongoing military conflict between competing city-states to some catastrophic environmental event, such as an intense drought—or some combination of all of those factors.
The entry of the United States into World War II caused vast changes in virtually every aspect of American life. ... Building on the economic base left after the war, American society became more affluent in the postwar years than most Americans could have imagined in their wildest dreams before or during the war.