When the Aryans migrated to India, what influential concept did they bring to the country?

the caste system

the decimal system

modern farming techniques

religious tolerance

The caste system

Caste system is closed, endogamous social group to which membership is hereditary. Caste existed and continues to exist in different societies, but due to their number in particular are characteristic of Indian society, where the caste system is reinforced and perpetuated by traditional taboos of Hinduism.