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 Athens Treaty of Athens The Treaty of Athens between the Ottoman Empire and the Kingdom of Greece, signed on 14 November 1913, formally ended hostilities between them after the two Balkan Wars and ceded Macedonia—including the major city of Thessaloniki—, most of Epirus, and many Aegean islands to Greece. In the First Balkan War, the coalition of Bulgaria, Serbia, Greece and Montenegro defeated the Ottoman Empire. The Ottomans lost nearly all their European possessions, which were reduced to a small amount of territory around the Sea of Marmara by the Treaty of London. The Ottomans however were able to recover Eastern