Complex sentence: The distinction between the two was often far from clear, although historically speaking the Uzbeks were descended from tribes which arrived in the region with Shaibani Khan in the 16th century, whilst Sarts belonged to older settled groups.
Split into simpler sentences: The distinction between the two was often far from clear. Although historically speaking the Uzbeks were descended from tribes which arrived in the region with Shaibani Khan in the 16th century, Sarts belonged to older settled groups.