So the thirty years war lasted from 1618 to 1648 and was ended by the Peace of Westphalia. In the peace treaty France and Sweden got the lions share of territories, therefore "winning" the war. My question is what if either the Catholics (ex Spain, Austria and the Catholic League) or the protestants (ex Sweden, Denmark, Netherlands and the Protestant Union) decisively win the war. Maybe by the protestants capturing Vienna or the Catholics capturing Berlin, Amsterdam and maybe invading Sweden itself. What would Europe look like?