 The second yet equally important purpose was to devise a method by which disputes could be resolved short of war.To that end, a legal code was drafted, establishing a system of rules that governed the daily activities of all Mongols from the Volga River in southeastern Russia to present-day eastern Mongolia.These set of laws are called the "Great Code of the Forty and the Four" (Döchin Dörben Hoyar un Ike Tsagaza) known as the Khalkha-Oirat Law.