Rubuta ci gaba don wannan sakin layi - A farkon karni na 14, bayan mutuwar Boleslaw-Yuri II na Galicia, Sarkin Rus, akwai yaƙin da ya faru don maye gurbinsa. Daga ƙarshe Yarima Yuri, ɗan Narimantas (Jerzy Narymuntowicz) na Grand Duchy na Lithuania ya gaji Duke. Lokacin mulkin Yuri na Belz (1340-1377) ya ga Galician-Volhynia Wars
An kewaye Belz sau da yawa (a cikin 1351, 1352 da 1355). Daga 1378 zuwa 1387 ya fada cikin tasirin tasirin Masarautar Hungary, kamar yadda a cikin 1377 Louis I na Hungary ya kama Belz; tsawon shekaru da yawa, yarima Władysław Opolczyk ne ke mulkin daular a cikin sunan Louis. A wannan lokacin, Poland ta kasance cikin ɗan gajeren lokaci tare da Hungary, amma a cikin 1387, bayan ƙarshen ƙungiyar, Sarauniya Jadwiga ta Masarautar Poland ta ɗauki Belz.