A civilization is a complicated society described by urban growth, social stratification forced by a cultural cream, typical systems of communication. Individuals views that in order for something to be civilized, a state must be concerned with the ability of state administration as it helps the societies to be civilized.
Because civilization requires rules, basically. Rules are made by an entity higher than ourself, so first there were cities, and then those cities unite together in a state. The state is the entity who has the authority to set rules in order to mantain order and peace in the territories under its authority. So, civilization equate state control because without state control we don't have a civilization.
No, he was not hypocritical because he didn't allow slavery. With or without it, it wouldn't have had a big impact on his life so he didn't do it because it helped himself. He did because he had the kindness of heart.