What mutual benefits for first nation people and europeans were consequences of the fur trade?

Fur trades were mutually beneficial for both groups of people.

Fur was in high demand in Europe, and so Europeans had Native people get animal furs for them to send back to Europe and make lots of money from.

Native people in return were given handy things that they had not had before, such as guns, pots and pans, etc. (They were also given things that weren't so great, like smallpox infected blankets. Not good.)

Hope that helps!