Contemporaries considered Genghis Khan to be the creator of Mongolia, who united the nomadic tribes. Under Genghis Khan, the Great Silk Road became a single political environment, and the Mongolian conquests significantly facilitated communication and trade between Northeast Asia, Muslim Southwest Asia, and Christian Europe, broadening the cultural horizons of Eurasian civilizations. At the same time, Genghis Khan is one of the most brutal conquerors in history. His campaigns led to a sharp population decline in some regions, largely due to mass killings and famine. According to various estimates, the number of deaths resulting from Genghis Khan's military campaigns ranges from four to sixty million people. Read the most terrifying pages of the biography of the great military leader in the new book of the series "The Most Complete Biography".