What are the names and responsibilities of the major insurance regulators?

Why are the states responsible for numerous insurance regulations? What advantages and disadvantages does this have?

How does an insurance regulator intervene in the event of insolvency?

What are the key components of an insurance contract?

Explain contract of adhesion, contract of indemnity, subrogation, and endorsements$/$riders$.$

What is the difference between concealment and misrepresentation? In the event that an insured does either of these, what are the potential implications? How can these issues be reduced or prevented by insurance companies?