Answer:
C) by reducing travel time over long distance
Explanation:
An APHugist!
But, no, on your list it would be an anthropologist
British Slave Traders - who bought and sold enslaved Africans. Plantation Owners - who used slave labour to grow their crops. Vast profits could be made by using unpaid workers. Planters often retired to Britain with the profits they made and had grand country houses built for them.
The answer is D: everywhere is as dangerous