"Thirty Years\' War." YourDictionary, n.d. Web. 12 November 2018. <https://www.yourdictionary.com/thirty-years-war>.
Thirty Years\' War. (n.d.). Retrieved November 12th, 2018, from https://www.yourdictionary.com/thirty-years-war
Thirty Years' War
A series of wars in central Europe beginning in 1618 that stemmed from conflict between Protestants and Catholics and political struggles between the Holy Roman Empire and other powers. It ended with the Peace of Westphalia (1648).