> drove horses out of our economy A graph of the process is in https://news.ycombinator.com/item?id=39604784 https://news.ycombinator.com/item?id=39604784 (it

> drove horses out of our economy A graph of the process is in https://news.ycombinator.com/item?id=39604784 https://news.ycombinator.com/item?id=39604784 (it also includes a bifurcation: between draft and sport/companion horses)