If you will actually pay attention to the conquests of Ghengis Khan, you will notice that whenever he conquered a city, he only removed the leaders and then left the people, customs, religion and lifestyles in place so that he could trade with them. The excepts were muslim cities. The muslims gave him so many problems and he could not trust them to uphold their word, so he razed their cities and killed everyone of them that he encountered.
Ghengis Khan might not have been as bad as our agenda driven teachers led us to believe.
Genghis killed all inhabitants of any city that resisted him. This was to encourage other cities to think twice about doing so.
The reason he killed so many Muslims was that they refused to submit to an unbeliever.
Some estimates are that the Mongols killed up to 80% of the total population of Central Asia, Iran and Iraq. Many of these areas have never fully recovered the level of civilization they had before the Mongols came through. Iraq, for instance, had been continuously prosperous for at least 5000 years. It has been largely desert since the Mongols.
The 40M credited to the Mongols was about 10% of the world’s population at the time. No other conqueror or group has ever come close to an equivalent percentage death toll. The 20th century commies, for instance, are down somewhere around 2 to 3%.
Good point. The Mongol Army adopted a corps of specialists from just about every country that they defeated. This is how an army of horse archers manages to subdue walled cities.