Answer:
native americans
Explanation:
the other options are all much more recent than 8000 bc
<span>C. The drought and ecological disaster of the central United States in the 1930s
The Dust Bowl describes the affect of a drought on the central americas, which led to plain fires, creation of deserts (as there was little water), as well as the effect it has on the crop market, the availablity of crops, as well as prices.
hope this helps</span>
The answer is D. expensive wars with neighboring tribes.
Ahh power, lowest slaves, middle merchants, etc... you know how it goes