Original: The term Peace of Westphalia denotes a series of peace treaties signed between May and October of 1648 in OsnabrÃ 1\/4 ck and MÃ 1\/4 nster.
Simplified: The Peace of Westphalia refers to the pair of treaties, the Treaty of OsnabrÃ 1\/4 ck and the Treaty of MÃ 1\/4 nster, signed on May 15 and October 24 of 1648, which ended both the Thirty Years' War and the Eighty Years' War.