Ameliorate the Mongols

Directions: grammatically correct the sentence below. There are three missing commas.

Genghis Khan proclaimed as the ruler of all Mongols in 1206 helped create the Mongol Empire a vast transcontinental empire that connected the East with the West.  

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Suggested Correction:

Genghis Khan, proclaimed as the ruler of all Mongols in 1206, helped create the Mongol Empire, a vast transcontinental empire that connected the East with the West.