How foreigners assimilated into the Indian society?

Ans. During the Gupta period, there was proliferation of castes into numerous sub-castes due to many factors like, social and religious rules, intercaste marriages, conversion of different occupations people into caste with people of their respective profession etc. A large number of foreigners had been assimilated into the Indian society and each group of foreigners mainly came as conquerors, they were given status of Kshatriya in society.