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

Well horses aren’t native to the Americas either. They were at some point in the past (around 10k years ago), then went extinct, I assume due to the ice age, then other species of equine were introduced again. In Australia, no hooved animals are native by the way.