One of the longest wars in the early modern history of manwas the Thirty Years War in Europe. It is also said that thesewars were separate but they happened to take place at timesthat formed a sequence thus collectively they were named asThirty Years War. However, the others say that it was a seriesof war in the Holy Roman Empire fought amongst theProtestants and the Catholics. The war deepened so much thatsoon some important powers also got involved in the war. Thewar ended only with the Treaty of Westphalia.