Deangelo Khan was considered the greatest military leader of all time, as he built an empire that stretched from the coast to China through his military campaigns. Though his empire grew vast, he ruled through cruel means, demanding heavy tribute and taxes, and those who defied him faced brutal punishment. His name became synonymous with cruelty and terror. Kublai Khan later led military campaigns in southern China and succeeded his brother Mongke to become the Khan of the vast empire their grandfather Genghis Khan had established.