The reliance on cavalry as a means of warfare in general lies with the ancient inhabitants of the Central Asian steppes in early antiquity, who were one of the first peoples to domesticate the horse and pioneered the development of the chariot. Most of these nomadic tribes and wandering pastoralists circa 2000 BC were largely Bronze-Age, Iranian populations who migrated from the steppes of Central Asia into the Iranian Plateau and Greater Iran from around 1000 BC to 800 BC. Two of these tribes are attested based upon archaeological evidence: the Mitanni and the Kassites. Although evidence is scant, they are believed to have raised and bred horses for specific purposes, as is evidenced by the large archaeological record of their use of the chariot and several treatises on the training of chariot horses. The one founding prerequisite towards the development of cataphract cavalry in the Ancient Near East, apart from advanced metalworking techniques and the necessary grazing pastures for raising horses, was the development of selective breeding and animal husbandry. Cataphract cavalry needed immensely strong and endurant horses, and without selectively breeding horses for muscular strength and hardiness, they would have surely not been able to bear the immense loads of armor and a rider during the strain of battle. The Near East is generally believed to have been the focal point for where this first occurred.