Which of the Following Correctly Describes a Major Consequence of Colonial

Which of the following correctly describes a major consequence of colonial growth in the New World?

A) Through the use of various trade routes, the colonies helped European commerce grow dramatically.
B) A majority of the crops the colonies produced required little manpower at harvest time, which delayed the introduction of slave labor there by nearly a century.
C) Because the colonies were expensive ventures, they put a strain on the British and French markets, preventing the European economy from expanding.
D) Due to the availability of their imports in Europe, the colonies helped make life substantially better for the urban poor living in European cities.
E) The colonies caused the population of European cities to dramatically decrease as Europeans migrated to the Americas.