ABSTRACT
The state of Kievan Rus reached its territorial zenith in the tenth century and adopted Christianity during the rule of Volodymyr the Great. In 1240 Kiev was sacked by Genghis Khan. Ukraine was absorbed by the kingdom of Poland in the fifteenth century. In 1654 Boghdan Khmelnytsky, a Ukrainian Cossack chieftain, led a revolt against Polish overlords and unified Ukraine with Russia (FT, 8 May 1999, p. 2).
