Which of these are factors that caused Europeans in the West Indies to use enslaved Africans? Check all of the boxes that apply. They needed many people to work on their plantations. They turned to Africans after West Indies natives planned major rebellions. They turned to Africans after West Indies natives died in large numbers. They could not afford to pay workers from the West Indies. They brought enslaved workers with them from Europe.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.