In which region did indigenous peoples hunt herds of buffalo for their meat, skin, and bones?
A. The Arctic and Subarctic
B. The Northwest Coast
C. The Northeast
D. The Plains

D. The Plains

Explanation:

I had the question on apex and got i correct.

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.