What important federalist idea is expressed in this excerpt from the federalist papers?

What is constantinoples government?

Which concept is plato expressing in the excerpt below? when men have both done and suffered tyranny, and have had experience of both . . they think that they had better agree among themselves to have neither. . —plato, the republic: book ii

One exception to the full faith and credit clause is that one state cannot enforce the civil law of another state is required to recognize marriages and divorces in another state cannot enforce the criminal law of another state is required to enforce the criminal law of another state