The Mongols invaded many lands expanding territory over 160 years. Genghis himself built nothing and contributed very little to society - reigning less than 15 years, if that’s the proper word. Little remains of the man aside from the DNA in those he raped and their descendants. No structures, nor towers, nor statues, nor contribution to the flourishing of humanity in art, in science, in any which way. Shortly after he was defeated decisively, his empire lasting a short time. A rampage of killing for little to no reason, with nothing to offer, with no meaning or significance apart from the pleasure of his flesh in raping, which in itself is not much.