Buuxi weedhan soo socota: Marka hore, halkii amiirka maxalliga ah, bartamaha Serbia waxaa loo abaabulay Catepanate of Ras, waxaana xukumayay maamulaha Byzantine. Wuxuu haystay darajo sare oo katepano (ama dux) wuxuuna fadhiyay Ras. Si kastaba ha noqotee, xaaladdaani muddo dheer ma sii socon, isla markii uu dhintay John I Tzimiskes 976, kacdoonkii Cometopuli wuxuu ka qarxay bartamaha Balkans isagoo dib u soo celinaya in muddo ah dowladdii Bulgaariya. Dagaaladii soo socday, ee socday qarniyo badan
Guushii Byzantine ee Bulgaria waxay Serbia gelisay xaalad adag. Waxaa jira diiwaanada 991-992 wafdiga Serbia ee u safray badda si ay ula kulmaan boqorka Byzantine Basil II The Bulgar-Slayer. Waxaa la rumeysan yahay in wafdigan ay ka yimaadeen qaar ka mid ah dowladaha badda ee Serbia. Xilligan, waxaa la diiwaangeliyey in xukunka Jovan Vladimir, oo ahaa taliyihii Duklja ee c. 1000, oo ku fidsan "aagagga Serbia".