Which of the following was the first action taken by the federal government to protect the environment?
A. Establishing a national park system
B. Limiting the amount of waste dumped in the nation's waterways
C. Creating a new agency to oversee polluting industries
D. Setting limits on the emission of greenhouse gases

C - Creating a new agency to oversee polluting industries

Explanation:

National Environmental Policy Act (NEPA), the first major U.S. environmental law. Enacted in 1969 and signed into law in 1970 by President Richard M. Nixon, NEPA requires all federal agencies to go through a formal process before taking any action anticipated to have a substantial impact on the environment.

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.