During ancient times in the Indian society followed a very rigid and cruel caste system. Some people were marginalized by this system and decided to live outside such societies. These tribes and nomads lived and flourished in their own communities. A nomad is a member of a community of people who live in different locations, moving from one place to another. A tribe is viewed, historically or developmentally, like a social group existing before the development of, or outside of, states. Most of the nomads used to travel in groups of families called bands or tribes. Still, there are nomads in India and in many countries of the world who live in groups of families.