I think that the answer is a. and c. and d. because that is what my teacher told me....so yeah I hope this helped you
Answer:
C) To prevent environmental problems and disasters. Government regulation is an important part of American society today.
the answer is B._<span>lived in wigwams and longhouses</span>
<span>hope I helped</span>
100% positive!!!!!!!!!!!!!!!!!!!!!!!!!!1
