"Both the Kusikas and the Bhargava-Richikas seems to have links with the ancient western-cultures (See Also: Bahlika Culture, Madra Culture, Rishika Kingdom and Rishikas). Viswamitra (Kusika's race) was born as a Kshatriya and later became a Brahmana, much like what was common in Madra Cultures. Bhargava Rama ( Richika's race) was mentioned as an expert in the use of the battle-axe, which he got from Kailasa region (Kailas range Tibet). The Rishika tribe, who were experts in the use of battle-axes were located not far from this region. The custom of donating or accepting horses as dowry also indicates a north-western culture. It seems that neither the Bhargavas (and Richikas or Rishikas) nor the Kusikas, maintained any distinctions such as Brahmana and Kshatriya upon themselves. However during the later periods, when the Vedic religion became rigid in its four-order caste-system, the Bhargavas were accepted as Brahmanas and the Kusikas as Kshatriyas"