I’ve searched in this forum and really couldn’t pinpoint an answer. My gut tells me it might have been a side thought after being able to farm and harvest crops, or maybe even domesticate smaller animals. But from what I picture in movies and tv shows, it seems like we were riding horses before any kind of domestication. I greatly appreciate any foresight into this, or sources I can look up to read into further. TIA so much for your insight and time!