Herzegovina uprising (1875–77) April Uprising (1876) Razlovtsi insurrection (1876) On June 28, 1876, Montenegro and Serbia declared war on the Ottoman Empire. Serbian–Ottoman War (1876–1878) Montenegrin–Ottoman War (1876–78) First Constitutional Era (1876-1878) Constantinople Conference (1876–77) Russo-Turkish War (1877–1878) Romanian War of Independence Provisional Russian Administration in Bulgaria Treaty of San Stefano (1878) Expulsion of the Albanians 1877–1878 Congress of Berlin (1878) Kumanovo Uprising (1878) 1878 Greek Macedonian rebellion Epirus Revolt of 1878 Cretan Revolt (1878) Austro-Hungarian campaign in Bosnia and Herzegovina in 1878 Kresna–Razlog uprising (1878)