The caste system in India is primarily based on birth, with individuals assigned to a particular caste based on their family's traditional occupation.

The Sudras are not a traditional caste group in India, but rather a term used to refer to the lowest social class in the caste system.

Brahmins are the highest caste group in the traditional caste system and are associated with priestly duties and religious rituals.

Kshatriyas are the second highest caste group in the traditional caste system and are associated with ruling and military activities.

Vaishyas are the third highest caste group in the traditional caste system and are associated with trade and commerce.

Shudras are the lowest caste group in the traditional caste system and are associated with manual labor and service.

Dalit is the term used to refer to the practice of untouchability in the caste system, which involves the social exclusion and discrimination of certain caste groups.

Article 15 of the Indian Constitution prohibits discrimination based on caste, religion, race, sex, or place of birth.

B.R. Ambedkar was an Indian social reformer and politician who is known for his efforts to abolish the caste system and promote social equality.

Dalit Movement is the term used to refer to the movement against caste discrimination in India, led by Dalit activists and organizations.

Uttar Pradesh has the highest percentage of Dalit population in India, at around 21%.

Sikkim has the lowest percentage of Dalit population in India, at around 1%.

Reservation is the term used to refer to the positive discrimination policies implemented in India to address caste-based discrimination, which involve reserving a certain percentage of seats in education, government jobs, and other areas for members of Scheduled Castes and Scheduled Tribes.

Tamil Nadu was the first Indian state to implement reservation policies, starting in the 1950s.

Inter-Caste Marriage is the term used to refer to the practice of marriage between individuals from different caste groups in India.