Ommon agricultural policy (research paper)

It is a research paper
I was going to discuss about common agricultural policy.

what is it and Has it been implemented well?

Its criticisms and examples and causes and effects

comparison between US agricultural policy by setting up the standard of comparison,goals, mechanism, effects, (since both system often subsidies, so the question is how they operte with what consequense)

discussing all, conclude whether it has been implemented well or not.