Mainly stayed within india j only very committed believers could withstand and stay with the religion. S how you act and how you behave defines your attainment of religious gratification. S you behave completely differently, in accordance to what is prescribed in the religion. Arose in reaction to changing condition of indian life and religious systems. In roughly the 6th century bce, there was a rising class of merchants and property owners in india. S economic, social, etc. environments were changing rapid as a result, there was a period of great social and intellectual ferment. People began to question the validity of hinduism and the authority of the brahmans. S at the time, vedic priests became very corrupted. S rejecting the basic claims of the vedic tradition. S asserting what they saw as reality of the universe being able to be attained by any cast, without priests, through meditation.