>horses never existed on Umaearth
>meaning the mongols were easily dominated by the chinese
>meaning the ming dynasty never collapsed and the heavenly kingdom still exists
>china is still a monarchist superpower
>the tsardom of muscovy, kingdom of lithuania and kingdom of poland never fell to the golden horde plunging the region into chaos and eventually spawning the black death that set europe back by hundreds of years
>without the polish winged hussars the ottoman was able to freely expand beyond vienna on camelback
>The rapid fast american expansion westward on horseback was basically impossible and thus everything from the gulf of california to vancouver is still under the spanish crown
Horses sure did play an extremely important part in human history. Never thought about it before.