The second volume of the historical research cycle by Boris Akunin "History of the Russian State". Chronologically, it covers the period of so called "Tartar Mongol Yoke" from 1223 till 1462 (from the battle on the Kalka river and the Mongols' defeating the unified battalion of Old Russian knyazs to ascending the grand-ducal throne by Ivan the Great). The writer has tried to integrate in his book ...