Christendom usually refers to Christianity as a territorial phenomenon. It can also refer to the part of the world in which Christianity prevails. Christendom as a polity The term Christendom has been used to refer to the medieval and renaissance notion of the Christian world as a sort of social and political polity. In essence, the vision of Christendom is a vision of a Christian theocracy, a government devoted to the enforcement of Christian values, whose institutions are suffused with Christ… (More on Christendom)