If you ask an equestrian how horses fly, they’ll probably launch into a misguided but well-intended extended explanation of the history of equine locomotion, telling you about how it took centuries for humans to have proof that horses do leave the ground entirely during one phase of the canter or lope. But that’s not what you were asking. You wanted …
As long as horses have been ridden, there has always existed a need to move horses further than simply riding would suffice. Whether that was moving them across a river by swimming them or flying across the planet in a modern airplane, horses have always needed their own transportation. In North America, the wild horse died out around 10,000 BCE. That …