Book
Empire of Silver
Book 4 in the Conqueror series.
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After the death of Genghis Khan, his sons and generals must decide whether the empire will remain united. Ögedei secures the succession and establishes a capital at Karakorum, while Subutai and Batu carry Mongol armies through the Rus principalities and into central Europe. The advance culminates in the invasion of Hungary, but illness, family rivalry and competing claims to authority threaten the campaign at its moment of greatest success.