Their trade was adjudicated by a commercial court of seven judges—two representing each of the Abrahamic religions and one for pagan tributaries.
The geographer Istakhri claimed these people had no natural resources except for isinglass, a material used in parchment preservation. In a letter, a king of these people claims his ancestors kicked out all the qams, or shamans, from their territory. Their trade was adjudicated by a commercial court of seven judges—two representing each of the Abrahamic religions and one for pagan tributaries. These people petitioned the emperor Theophilus to build a fortress for them, named for its white limestone bricks, and in return for that building, the Sarkel, they ceded their land in the Chersonesus. Their king Bulan is described as a descendant of Obadiah in the "Correspondence" named for these people, who served as a buffer between the Byzantines and Arabs until they were destroyed by the Kievan Rus. For 10 points, name this Turkic people of the Volga steppe who notably converted to Judaism.
The geographer Istakhri claimed these people had no natural resources except for isinglass, a material used in parchment preservation.
Khazars [or Khazaria; or Khazar Khaganate]