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's 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's 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