Eastern Rumelia was created as an autonomous province within the Ottoman Empire by the Treaty of Berlin in 1878. The region roughly corresponded to today's southern Bulgaria, which was also the name the Russians proposed for it; this proposal was rejected by the British. It encompassed the territory between the Balkan Mountains, the Rhodope Mountains and Strandzha, a region known to all its inhabitants—Bulgarians, Ottoman Turks, Greeks, Roma, Armenians and Jews—as Northern Thrace. The artificial name, Eastern Rumelia, was given to the province on the insistence of the British delegates to the Congress of Berlin: the Ottoman notion of Rumelia refers to all European regions of the empire, i.e. those that were in Antiquity under the Roman Empire. Some twenty Pomak (Bulgarian Muslim) villages in the Rhodope Mountains refused to recognize Eastern Rumelian authority and formed the so-called Republic of Tamrash.