I think the answer is (b)
Answer:
The Native Americans in the Pacific Northwest adapted to their environment by making things out of wood. They depended on the fish, wildlife, and plants instead of farming. ... The Native Americans in the Pacific Northwest modified their environment by cutting down trees for houses, clothing, etc.
Explanation:
The middle-class European people being much more powerful during the Commercial Revolutions than it was under the feudalism best describe the economic difference between European feudalism and later economic models that emerged in Europe following the Commercial Revolution.
CE means Current Era so I believe it would be A or B.