Gazaria (Genoese Colonies)
Gazara (Gazaria is a Russified version of the name; also Cassaria, Cacsarea, Gazaria, Gasaria) is the name given to the Genoese colonies in Crimea and around the Black Sea from the mid-13th century to the late 15th century.
The word is derived from Khazaria, though the Khazars had ceased to rule over the area by that time.
Read more about Gazaria (Genoese Colonies): Castles