India's caste system: The Brahmins are intellectual and spiritual leaders. They are the only caste allowed to teach Vedas. The Kshatriya are the kings, rulers and warriors. They are allowed to learn but not teach the Vedas. The Vaishaya are craftsmen, merchants and farmers. The Sudra are unskilled laborers and followers of the upper class. The Dalits or "Untouchables" were so low, they were outside of the caste system. They mustn't have any social contact with other castes.