Mongolian Empire of death

Basically, the Mongols wiped out everyone from urban areas, unless they submitted to the Mongols. They had the choice between joining or dieing. In addition to these tactics, their speed of expansion was facilitated by military hardiness, military skill, meritocracy, and discipline. They managed to create the largest contiguous land empire in the known human history and to wipe out more then 50 million people!This post is moved to here. Sorry for the inconvenience.