Voluntary regional groupings of local governments that attempt to provide a forum to share information and coordinate public policy are called

Councils of Government

Explanation:

Based on the information provided within the question it can be said that the groupings being mentioned are called Councils of Government. Like mentioned in the question these are regional governing or coordinating bodies that exist all over the United States of America and are in charge of sharing information and creating/coordinating public policy.

question 1:

senate and house of representatives

i would try to answer the second question but i’m not 100% positive but i hope i

answer; answer; marginal cost;