Yasak
Yasak or yasaq, sometimes iasak, (; akin to Yassa) is a Turkic word for "tribute" that was used in Imperial Russia to designate fur tribute exacted from the indigenous peoples of Siberia. Origin The origins of yasak can be traced to a tax collected from native, primarily non-Turkic populations in the Golden Horde. The word yasaq is a Russian variation of the Qazaq/Turk word 'Zhasaq', which has two meanings: The first meaning is 'This is what you have to do', from a law decree of the time of Genghis Khan. The second meaning is a 'ten-man troop', the smallest unit of an army, which would come to collect a tribute of one-tenth of profits for the Golden Horde; their name became associated with the tribute and was thereby borrowed into European languages. The exact time when the concept of yasak was introduced in Muscovy is uncertain. It appears likely, however, that the tax was inherited by Muscovy from the Volga khanates of Kazan and Astrakhan - two fragments of the Golden Horde that were subjugated by Ivan IV in the 1550s. These territories were settled by a range of non-Christian peoples who were expected to pay yasak either in kind