The man who united all the Mongol tribes into a single confederation in 1206 was __________.
Hülegü.
Teghril Beg.
Chinggis Khan.
Mahmud of Ghazni.
Observing Mongol rule in Persia and China, one can say that the Mongols were _______________.
Good administrators.
Ferocious plunderers.
Both a and b
None of the above.