Vlachs (Latin: Valachi; Ottoman Turkish: Eflak, pl. Eflakân; Serbo-Croatian: Vlah / Влах, pl. Vlasi / Власи) was a social and fiscal class in several late medieval states of Southeastern Europe, and also a distinctive social and fiscal class within the millet system of the Ottoman Empire, composed largely of Eastern Orthodox Christians who practiced nomadic and semi-nomadic pastoral lifestyle, including populations in various migratory regions, mainly composed of ethnic Vlachs, Serbs and Albanians.[1][2] From the middle decades of the 17th century the amalgamation of the process of sedentarization of the Orthodox Vlachs and their gradual fusion with Serbian rural population reached a high level and was officially recognized by the Ottoman authorities.[3][4]