Genghis Khan had the biggest empire (The Mongolian Empire) it spread from as East as Korea to as west as Hungry (Named after the the Huns)
As North as Russia and as south as India. Whoa that's a lot of turf that's why in his empire he made it free religion, But he originally was Shamanistic (Worshiped nature and elements) but he asked Religious Leaders to bless him. His name means "Univesal Ruler" but his birth name was Temüjin.
