This man organized his armies in units of ten thousand called (*) tumen, and helped them communicate across huge distances by expanding the yam postal system.
After a defeat at the Battle of Parwan, this leader defeated Jalal ad-Din Mingburnu at the Indus River, but failed to prevent Mingburnu's crossing. A trade mission representing this man was arrested by governor Inalchuq of Otrar, whom this ruler apocryphally killed by having silver poured in his eyes and ears after invading Khwarezm. This man organized his armies in units of ten thousand called (*) tumen, and helped them communicate across huge distances by expanding the yam postal system. This man established a secret law code known only to his family called the Yassa. He recovered his wife Börte after she was kidnapped by the Merkits and with her had sons like Chagatai, Tolui, and Ögedei. For 10 points, who founded the Mongol empire?
After a defeat at the Battle of Parwan, this leader defeated Jalal ad-Din Mingburnu at the Indus River, but failed to prevent Mingburnu's crossing.
Genghis Khan [accept Temüjin or Chingis Khan] &lt;AF, WorldHist&gt;