In 1804, as has been recorded, Kara George in Serbia raised the standard of revolt against Turkey. In 1806 the Serbs defeated the Turks in a pitched battle, and for a moment Serbia was free. But in 1812 when the Turkish power resolved upon a great invasion of Serbia, the heart of Kara George failed him and he left his country to its fate, taking refuge in Austria. Thus deserted by their leader, the Serbs did not abandon the struggle altogether. Milosh Obrenovic stepped to the front as the national champion, and though he could make no stand against the Turkish troops in the open field he kept up an active revolt from a base in the mountains. The contest for national liberty went on with varying fortune. Troubles at this time were thickening around Turkey, and whenever she was engaged in war with Russia the oppressed nationalities within her borders took the opportunity to strike a blow for liberty. By 1839--it is not possible to make a record of all the dynastic changes and revolutions which filled the years 1812-1839--Serbia was practically free, with the payment of an annual tribute to Turkey as her only bond. During the Crimean War she kept her neutrality as between Russia and Turkey. The Treaty of Paris (1856) confirmed her territorial independence, subject to the payment of a tribute to Turkey. In 1867 the Turkish garrisons were withdrawn from Serbia; but the tribute was still left in existence until the date of the Treaty of Berlin. [Illustration: _Exclusive News Agency_ THE KING OF ROUMANIA] Roumania in 1828 (then Wallachia and Moldavia) had won her territorial independence of Turkey subject only to payment of a tribute. The Treaty of Paris (1856) left her under a nominal suzerainty to Turkey. In 1859 the two kingdoms united to form Roumania, and in 1866 the late King Charles, as the result of a revolution, was elected prince of the united kingdom.