1653 Imperial election electoral rights in a treaty of 1619, confirmed at the Diet of Regensburg on February 25, 1623. The revolt ignited a broader religious war across Germany, the Thirty Years' War, which would involve not only the states of the empire but also Sweden, the Dutch Republic, France, Denmark–Norway, England, Scotland, Spain and Hungary and which would kill some eight million people before its end. The Peace of Westphalia which ended the war in 1648 revived the principle of "cuius regio, eius religio" established in 1555 by the Peace of Augsburg and established the modern concept of Westphalian sovereignty. It additionally
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