Serbia became a center of resistance to Ottomans, actively or secretly supporting liberation movements in neighboring Serb-inhabited lands, especially Bosnia, Herzegovina and Macedonia, as well other Christian-inhabited lands, such as Greece. It resulted to Herzegovina uprising in 1875, and Serbian-Turkish wars (1876-1878). In 1903, Serbian Chetnik Organization was founded in aim to liberate Old Serbia (Kosovo and Macedonia), which was on territories of Kosovo Vilayet and Macedonian vilayets under Ottoman rule. The Serbian–Ottoman conflict culminated in the First Balkan War of 1912.