1) What are the duties and responsibilities of US citizens? What is the difference between a duty and a responsibility?

1.    Support and defend the Constitution.

   Stay informed of the issues affecting your community.

   Participate in the democratic process.

   Respect and obey federal, state, and local laws.

   Respect the rights, beliefs, and opinions of others.

   Participate in your local community.

Pay income and other taxes honestly, and on time, to federal, state, and local authorities.

Serve on a jury when called upon.

Defend the country if the need should arise.

2.As nouns, the difference between duty and responsibility

is that duty is that which one is morally or legally obligated to do while responsibility is the state of being responsible, accountable, or answerable.

the revolution instituted a short-lived roman republic.

this is a good question! i'll do some research and come back when i have the answer!