The Serbian–Turkish Wars (Serbian: Српско-турски ратови, romanized: Srpsko-turski ratovi), also known as the Serbian–Ottoman Wars or Serbian Wars for Independence (Српски ратови за независност, Srpski ratovi za nezavisnost), were two consequent wars (1876–1877 and 1877–1878), fought between the Principality of Serbia and the Ottoman Empire. In conjunction with the Principality of Montenegro, Serbia declared war on the Ottoman Empire on 30 June 1876. By the intervention of major European powers, ceasefire was concluded in autumn, and the Constantinople Conference was organized. Peace was signed on 28 February 1877 on the basis of status quo ante bellum. After a brief period of formal peace, Serbia declared war on the Ottoman Empire on 11 December 1877. Renewed hostilities lasted until February 1878. Final outcome of wars was decided by the Congress of Berlin (1878). Serbia gained international recognition as an independent state, and its territory was expanded.