Why do you think the british troopscame from canada to take over the northern colonies?

The British troops came from Canada to isolate New England completely from the other colonies so General William Howe could attack Philadelphia without anybody stopping him.

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.