Which of the following statements best describes migration in the 20th century? A. Large numbers of people moved to foreign colonies during the 20th century. B. Migration during the 20th century was purely for economic opportunity. C. Migration during the 20th century was influenced by several factors, including war and politics, urbanization, and economic opportunities. D. Migration in the 20th century was influenced by European imperialism. Please select the best answer from the choices provided. A B C D.