Margraviate of Brandenburg fief of the Polish–Lithuanian Commonwealth, to which the electors paid homage. The electors of Brandenburg spent the next two centuries attempting to gain lands to unite their separate territories (the Mark Brandenburg, the territories in the Rhineland and Westphalia, and Ducal Prussia) to form one geographically contiguous domain. In the Peace of Westphalia ending the Thirty Years' War in 1648, Brandenburg-Prussia acquired Farther Pomerania and made it the Province of Pomerania by the Treaty of Stettin (1653). In the second half of the 17th century, Frederick William, the "Great Elector", developed Brandenburg-Prussia into a major power. The state constructed Brandenburg's
Treaty of Bakhchisarai fish in the Dnieper and its tributaries; to obtain salt in the south; and to sail on the Dnieper and the Black Sea. The sultan then recognized Muscovy's sovereignty in the Left-bank Ukraine region and the Zaporozhian Cossack domain, while the southern part of the Kiev region, the Bratslav region, and Podolia were left under Ottoman control. Despite the treaty, Russia joined a European coalition against the Ottoman Empire in 1686. Treaty of Bakhchisarai The Treaty of Bakhchisarai (; ) was signed in Bakhchisaray, which ended the Russo-Turkish War (1676–1681), on 3 January 1681 by Russia, the Ottoman Empire, and