▁most ▁Th ra cian ▁territory ▁was ▁on ▁the ▁Greek ▁half ▁of ▁the ▁J ire č ek ▁Line , ▁aside ▁from ▁varied ▁Th ra cian ▁populations ▁stretch ing ▁from ▁Th race ▁into ▁Alban ia , ▁passing ▁through ▁Pa ion ia ▁and ▁D ard ania ▁and ▁up ▁into ▁Mo esia ; ▁it ▁is ▁considered ▁that ▁most ▁Th ra ci ans ▁were ▁H ellen ized ▁in ▁Th race ▁( v . ▁H odd in ott ) ▁and ▁Mac ed onia . ▁ ▁The ▁Da cian ▁theory ▁could ▁also ▁be ▁consistent ▁with ▁the ▁known ▁patterns ▁of ▁bar bar ian ▁inc urs ions . ▁Although ▁there ▁is ▁no ▁documentation ▁of ▁an ▁Alban ian ▁migration , ▁" d uring ▁the ▁fourth ▁to ▁sixth ▁centuries ▁the ▁R uman ian ▁region ▁was ▁heavily ▁affected ▁by ▁large - scale ▁invasion ▁of ▁Goth s ▁and ▁S lav s , ▁and ▁the ▁Mor ava ▁valley ▁( in ▁Ser bia ) ▁was ▁a ▁possible ▁main ▁invasion ▁route ▁and ▁the ▁site ▁of ▁the ▁earliest ▁known ▁S lav ic ▁sites . ▁Thus ▁this ▁would ▁have ▁been ▁a ▁region ▁from ▁which ▁an ▁ind igen ous ▁population ▁would ▁naturally ▁have ▁fled ". ▁ ▁Gen etic ▁studies ▁ ▁Vari ous ▁gen etic ▁studies ▁have ▁been ▁done ▁on ▁the ▁European ▁population , ▁some ▁of ▁them ▁including ▁current ▁Alban ian ▁population , ▁Alban ian - spe aking ▁populations ▁outside ▁Alban ia , ▁and ▁the ▁B alk an ▁region ▁as ▁a ▁whole . ▁ ▁Y - D NA ▁The ▁three ▁ha p lo groups ▁most ▁strongly ▁associated ▁with ▁Alban ian ▁people ▁are ▁E