How come horses were so common all over the world in the past

Question

I recently watched a documentary about a brief history of each continent when I noticed horses were really common everywhere for an example Genghis khan in Asia, Saladin in Africa, natives in North and South America and all over Europe too. I know they’ve been brought with settlers to Australia because it was mentioned in the documentary but what about the other continents ?

In: 756

Answer 1

There’s this thing called “horse power”.

Not just horses, mules, camels, yaks, alpacas, etc etc.

Long before any human made steam power or internal combustion engine horses were available for transportation, warfare and power.