Which historical figure played an important role in the abilition movement in great britian

i believe the answer is d.

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.

they sent much needed naval support to the colonists, and were instrumental in the siege of yorktown