Cause:
The persecution and oppression of Christians in the Ottoman Empire led to a revolt in Herzegovina in 1875. Andrassy, on behalf of Austria, presented a Note to the Turkish Government demanding reforms, and this was followed by the Berlin Memorandum, signed by Germany, France, Austria, Russia, and Italy. Great Britain alone stood out. The Bulgarian massacres in June 1876 caused a great sensation in England, and were followed by a declaration of war by Servia and Montenegro against Turkey. Great Britain, always mistrusting Russian designs, called a Conference. The demands of the Conference were rejected by Turkey in January 1877. The Sultan protested against the encroachment of the Powers on his inviolable rights.