After the Russo-Turkish War of 1877–1878, the 1878 Treaty of Berlin set up an autonomous state, the Principality of Bulgaria, within the Ottoman Empire. Although remaining under Ottoman sovereignty, i
Balkan states around 1900.
Tsar Ferdinand of Bulgaria
Bulgarian dead in the Balkan Wars
Boundaries on the Balkans after the First and the Second Balkan War (1912–1913)
Bulgaria during World War I
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The Kingdom of Bulgaria participated in World War I on the side of the Central Powers from 14 October 1915, when the country declared war on Serbia, until 30 September 1918, when the Armistice of Salo
History of Bulgaria (1878–1946)
…soon went to war against its former allies Serbia and Greece and lost territory it had gained in the first war. The First World War (1914–1918) saw Bulgaria fighting (1915–1918) alongside Germany, Austria-Hungary, and the Ottoman Empire. Defeat led to the Treaty of Neuilly-sur-Seine (27 November 1919), in accordance…
A German postcard commemorating the entry of Bulgaria into the war.
A Punch cartoon of the Second Balkan War.
Vasil Radoslavov (c.1915). Prime minister from 1913 to 1918.