Adrianople, Treaty of, also called Treaty of Edirne, 1829, peace treaty between Russia and the Ottoman Empire (see Russo-Turkish Wars). Turkey gave Russia access to the mouths of the Danube and additional territory on the Black Sea, opened the Dardanelles to all commercial vessels, granted autonomy to Serbia, promised autonomy for Greece, and allowed Russia to occupy Moldavia and Walachia until Turkey had paid a large indemnity.