Which of the following best describes an economic trend that emerged in the 19th century, as illustrated in Source 1? A. European countries needed to obtain raw materials to support expanding industrialization.
B. Imperialism caused an increase in trade that focused on obtaining necessities that were not available in Europe.
C. Economic globalization caused population booms in Europe, necessitating foreign trade for food.
D. European countries encouraged imperialism to expand foreign trade in profitable luxury goods.