The first ruler of the Mongol Empire was Genghis Khan. Born as Temujin, Genghis Khan rose to power in the early 13th century and unified the Mongol tribes into a formidable empire through a series of military campaigns and strategic alliances. Under his leadership, the Mongol Empire expanded rapidly, eventually becoming the largest contiguous empire in history, stretching from Asia to Europe. Genghis Khan's military tactics, organizational skills, and diplomatic strategies were instrumental in the empire's growth and success. He laid the foundation for the Mongol Empire's subsequent expansion and was revered as a great conqueror and statesman.