how did the clearing of forests by the settlers impact native Americans?

I think a fight began. Here are the options:

Intense fighting began
Rapid decline in the dear and beaver
Native Americans became skilled in forestry
There was no impact on Native Americans

c. and d. make no since.

I'm stuck in between a and b

Please Help! Fast!!!!!

I need the answer quick!

By gradually clearing away flammable material on the ground, Native Americans’ deliberate fires may have prevented large forest fires like those we see today. As Dr. Kevin Ryan, a former Forest Service research put it, "Anthropogenic fire shaped North American millennia so that many ecosystems are dependent on periodic fire."

ivy is talking about a test question smarty.

Which of the following areas in Minnesota did fort snelling eventually become? I need some help with this, please.