Vlachs are distinct ethnos wich is formed after the fall of the Roman Empire and Migration Period in Europe, on the range of the Roman province of Macedonia. After that proces they expanded all over South-Eastern Europe. Their name came from old Germanic word for stranger, precisely for Celts and Romance speaking people. Origin of Vlachs, that were inhabiting Dalmatian hinterland in 14th century is unclear, they can be idigenous people form that area, or people that migrated form region of Herzegovina or Bosina. They expansion in Dalmatia take place 14th century from the mountanious region of Cetina because of trade increase and large amounts of unused pasture, while in 15th century new Vlachs are migrating from the area of Herzegowina and Bosnia. In 16th century Turks are populating Dalmatian hinterland with the Vlachs largely from different cultural sphere, on their own and on the borderline theritory of the Republic of Venice in Dalmatia. Vlachs from region Cetina were favorized on behalf other mainly slavic population, and they had their own kind of autonomy.