Answer:
I'm pretty sure it was the Vikings
Its not 1 because Pilgrams were Christians while Puritans were Catholic.
Its not 2. Because of prior research.
Its not 3, because of logic.
Its not 4 because of the distance of where they lived.
So my logical guess is NUMBER 5.
Dogs played important roles in the Atlantic slave Trade because they helped capture slaves in Africa and were used to run slaves down similarly to how dogs are still being used today in the mountains to hunt down and keep sheep at bay. This is the similarity between the two.