By 1500 B.C.E. Aryans began their migration into Northern India. The agriculture of the Indus Valley allowed for the advancement of the society predominantly consisting of cattle breeders and herders. This transition marked a cultural transition from the Harappan culture, into a new Vedic culture.
The Caste system was a division of Indian society by occupation determined by birth. This social stratification created order, or balance that was demonstrated in the Vedic scriptures. The Vedic scriptures were the spiritual literature and hymns of the ancient Indian culture.
The image of Purusa embodied a cosmic man whose sacrifice by the gods created all life. This was another illustration of the division within society that was reinforced through religion beliefs.The mouth represented priests and teachers, his arms for warriors and rulers, the thighs stood for farmers traders and merchants and his feet which symbolized the foundation of society, the working labors such as street sweepers and latrine cleaners.