▁San jak ▁of ▁R use ▁ ▁San jak ▁of ▁T ăr n ovo ▁ ▁San jak ▁of ▁Vid in ▁ ▁San jak ▁of ▁Sof ia ▁ ▁San jak ▁of ▁Ni š ▁ ▁The ▁Dan ube ▁Province ▁was ▁founded ▁in ▁ 1 8 6 4 ▁and ▁consisted ▁the ▁sub pro vin ces ▁of ▁R use , ▁V arna , ▁Tul ce a , ▁T arn ovo , ▁Vid in , ▁Sof ia ▁and ▁Ni ş . ▁ ▁Two ▁sub pro vin ces ▁( S of ia ▁and ▁Ni ş ) ▁were ▁separated ▁from ▁the ▁Dan ube ▁Province , ▁so ▁that ▁Ni ş ▁san jak ▁was ▁part ▁of ▁P riz ren ▁Vil ay et ▁in ▁ 1 8 6 9 - 1 8 7 4 , ▁while ▁the ▁det ached ▁Sof ia ▁Province ▁was ▁founded ▁in ▁ 1 8 7 6 , ▁and ▁finally ▁both ▁Sof ia ▁and ▁Ni ş ▁were ▁an nex ed ▁to ▁Ad rian ople ▁and ▁Kos ovo ▁Vil ay ets ▁respectively ▁in ▁ 1 8 7 7 . ▁ ▁Dem ograph ics ▁In ▁ 1 8 6 5 , ▁ 6 5 8 , 6 0 0 ▁( 4 0 . 5 1 %) ▁Muslim s ▁and ▁ 9 6 7 , 0 5 8 ▁( 5 9 . 4 9 %) ▁non - Mus lim s , ▁including ▁females , ▁were ▁living ▁in ▁the ▁province ▁( ex cluding ▁Ni ş ▁san jak ); ▁some ▁ 5 6 9 , 8 6 8 ▁( 3 4 . 6 8 %) ▁Muslim