In the 13^th century, many parts of the world were shocked by the attacks of an unbeatable rising empire. The sudden and unexpected methods used by this new power left countries in Asia, the Middle East, and Eastern Europe helpless against invasion. The Mongol army, led by Genghis Kahn and his sons, was horrifying for the people of the time. Today, this empire which was once the strongest in history is no longer recognized as a dominant force. Historians believe one reason the strength of the ...