Based on archaeological evidence, horses were probably first ridden in the area of what is now Kazakhstan, starting about 3,500 B.C.E. However there are some indications of earlier horse riding activities, as the skeleton of a horse dated to about 6,000 years ago shows tooth wear, suggesting that the animal had worn a bit.
According to Equestrian and Horse, it was likely that horses were domesticated and used for food before they were used for riding and driving. While driving is believed to have followed riding, most hard archaeological evidence of horses being used for work or transportation by human beings centers around the use of chariots, which can be dated through burial sites to approximately 2,500 B.C.E. Xenophon, a Greek, wrote the first practical equestrian manual about 350 B.C.E.