What? I didn’t know Argentinians observed April Fools Day.
I certainly would not have expected it in September.
Genghis Khan had ultimately some interesting effects. He created a huge free trade area in the zone of conquest and increasing prosperity for the conquered populations thereby. His methods of warfare were not much different from warfare as it was known for millennia though on a much larger scale. The ultimately worst effects may have been the Islamization of the Tatars in the middle east and points east of there. The extermination of populations in cities that did not surrender without a fight had been SOP for millennia. Surrender and no massacre and maybe no looting. Make us fight for your city and lose a lot of men and treasure taking it and everything is ours and everyone is killed.