RUMELIA, or ROUMELIA (Turkish RumUi, " the land of the Romans," i.e. the East Roman or Byzantine empire), a name commonly used, from the i sth century onwards, to denote that part of the Balkan Peninsula which was subject to Turkey.
More precisely it was the country bounded N. by Bulgaria, W. by Albania and S. by the Morea, or in other words the ancient provinces, including Constantinople and Salonica, of Thrace and Macedonia. The name was ultimately applied more especially to a province composed of central Albania and western Macedonia, having Monastir for its chief town. Owing to administrative changes effected between 1870 and 1875, the name ceased to correspond with any political division. Eastern Rumelia was constituted an autonomous province of the Turkish empire by the Berlin treaty of 1878; but on the 18th of September 1885, after a bloodless revolution, it was united with Bulgaria (q.v.).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)