Genghis Khan is one of history`s immortals: a leader of genius, driven by an inspiring vision for peaceful world rule. Believing he was divinely protected, Genghis united warring clans to create a nation & then an empire that ran across much of Asia. Under his grandson, Kublai Khan, the vision evolved into a more complex religious ideology, justifying further expansion. Kublai doubled the empire`s size until, in the late 13th century, he & the rest of Genghis` ` Golden Family` controlled one fifth of the inhabited world. Along the way, he conquered all China, gave the nation the borders it has today, & then, finally, discovered the limits to growth. Genghis` dream of world rule turned out to be a fantasy. & yet, in terms of the sheer scale of the conquests, never has a vision & the character of one man had such an effect on the world. Charting the evolution of this vision, John Man provides a unique account of the Mongol Empire, from young Genghis to old Kublai, from a rejected teenager to the world`s most powerful emperor.