Genghis Khan, born around 1162, was the founder and Great Khan of the Mongol Empire, the largest contiguous empire in history. He united Mongol tribes and led them in conquering much of Asia and Europe. His military strategies were innovative and ruthless, employing psychological warfare, speed, and surprise to gain the upper hand. Genghis Khan's legacy includes the Mongol Empire's administrative and legal systems, which facilitated communication and trade along the Silk Road. His reign significantly impacted world history, fostering cultural exchanges and the spread of ideas. His death in 1227 did not halt the Mongol expansion, as his descendants continued his conquests. Genghis Khan remains a legendary and complex figure, known for both brutality and vision.