Humans began domesticating horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC.. 
Kàlẹ́ńdà Gregory ní kàlẹ́ńdà tí ó ń jẹ́ lílò jùlọ kákiri.Ìtọ́kasí àwọn kàlẹ́ńdà.. 