Complex sentence: Descendants of Tribalia, Dacians and Thracians were Romanised after the ROman conquest, successfully owned their possessions and inhabited the area until contemporary times, when ethnical assimilation, see Serbisation unssucessfully still try to subdue the lrge Romanian groups in the area.
Split into simpler sentences: Descendants of Tribalia, Dacians and Thracians were Romanised after the Roman conquest. They continued in the area until contemporary times, when ethnical assimilation (see Serbisation) has sought to subdue the large Romanian groups in the area.