What was the main concern of the environmental movement during the
progressive era?
o
a. passing regulations on the timber and fishing industries
o
b. managing and conserving natural resources
o
c. reducing the usage of energy
o
d. cleaning up air and water pollution

The answer would be C

Explanation:

This is because during this era more and more stuff were being built.

B. Managing and conserving natural resources

Explanation: ap3x

answer; /// i do believe that the correct answer is (a); a farming tribe that settled primarily along the mississippi and arkansas rivers;