Proper noun
Rumelia
English Wikipedia has an article on:RumeliaWikipedia
(historical) A former region comprising the territories of the Ottoman Empire in Europe.
The word was used by the Ottomans in Rumelia in its general meaning of mountain, as in Kodja-Balkan, Čatal-Balkan, and Ungurus-Balkani, but especially it was applied to the Haemus mountain. Source: Internet
Murad I administratively divided his sultanate into the two provinces of Anatolia ( Asia Minor ) and Rumelia (the Balkans). Source: Internet