PLEASE HELP ASAP
Which factor MOST contributed to the United States becoming a more multicultural society during the late 1700s and early 1800s?
A. Fewer immigrants from Europe came to the United States.
B. Many Africans were brought to the United States as slaves.
C. The United States set up new colonies in Africa and Asia.
D. American Indians became a larger part of the U.S. population.