The colonial economy of what would become the United States was pre-industrial, primarily characterized by subsistence farming.therefore that’s why they were important
It was the "B. Battle of Iwo Jima" that was one of the most devastating for U.S. Marine Corps, since this was a five-week-long battle waged by the US against the Japanese that was one of the bloodiest in the entire war.
I think it is peoples democratic dictatorship