I believe the answer here might be freedom,correct me if wrong hope I helped! ~Marcey<3
Answer:
Factors:
-The land was well suited for sugar plantations.
-Sugar was in high demand.
-Sugar was easy to load on ships and transport to Europe.
Not Factors:
-Portuguese laborers agreed to work in plantations only if sugar was grown.
-Sugar crops did not require hard labor.
-European traders had no experience trading with Africans.
All 4 contributed, but B and D are the most direct causes.