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chernigov, Christianity, Constantinople, History, Kiev, learning, Lithuania, Novgorod, pechenegs, Poland, politics, rostov, Russia, Russian history, tmutarakan, viking, war, yaroslav, yaroslavl
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boleslaw, History, Kiev, Novgorod, pechenegs, Poland, politics, Russia, Russian history, Svyatopolk, viking, vikings, war, yaroslav