The commencement of Genghis Khan's invasion of the Khwarazmian Empire, leading to one of the most catastrophic events and massacres in Iranian and world history.
Fun Facts
The invasion was triggered when a Khwarazmian governor executed Mongol merchants in Otrar. It resulted in the utter destruction of thriving cities like Nishapur, Merv, and Herat, and the deaths of millions.
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