structural:summarization, linguistic:paraphrasing
Technological innovations

Horses were probably ridden in prehistory before they were driven. However, evidence is scant, mostly simple images of human figures on horse-like animals drawn on rock or clay. The earliest tools used to control horses were bridles of various sorts, which were invented nearly as soon as the horse was domesticated. Evidence of bit wear appears on the teeth of horses excavated at the archaeology sites of the Botai culture in northern Kazakhstan, dated 3500–3000 BC.