I also was surprised to learn that horses were extinct from North America. Horses changed the way people worked. I never realized how dependent people were on horses years ago. I was surprised to learn that tens of thousands of wild horses roam the American West today. I also found it interesting that horses are pregnant for 11 months.
Foals can trot within an hour after birth.
Horses were used to haul heavy loads. Horses also worked on farms to plant crops. They still do sometimes. They were also used for a police vehicle. Horses were very important in wars long ago.