Westphalia to be Catholic. Osnabrück was divided almost equally between Catholicism and Protestantism. Parts of Westphalia came under Brandenburg-Prussian control during the 17th and 18th centuries, but most of it remained divided by duchies and other areas of feudal power. The Peace of Westphalia of 1648, signed in Münster and Osnabrück, ended the Thirty Years' War. The concept of nation-state sovereignty resulting from the treaty became known as "Westphalian sovereignty". After the defeat of the Prussian Army by the French at the Battle of Jena–Auerstedt, the Treaty of Tilsit in 1807 made the easternmost portion of today's Westphalia part of the
Piracy in the Caribbean problems at home to turn much attention to their New World colonies. The non-Spanish colonies were growing and expanding across the Caribbean, fueled by a great increase in immigration as people fled from the chaos and lack of economic opportunity in Europe. While most of these new immigrants settled into the West Indies' expanding plantation economy, others took to the life of the buccaneer. Meanwhile, the Dutch, at last independent of Spain when the 1648 Treaty of Westphalia ended their own Eighty Years War (1568–1648) with the Habsburgs, made a fortune carrying the European trade goods needed by these new