a) Social stratification is a feature of society: 

Social stratification is a feature of society. It is not merely the difference between individuals. It is something that permeates (covers) the entire society. Stratification implies that the societal resources are inequitably distributed among the different classes of people. In backward societies, production was very little and therefore stratification was also only nominal, or very minimal. Societies that lived by hunting and collecting foods are examples for this. But where societies achieved technological progress, stratification was seen in its full color. In such societies, people produced surplus, more than what they required. These resources were unequally distributed among the people of different classes. The innate abilities of people were not considered here. 

b) Social stratification has been in existence for generations:

Social stratification is related to the family and also to the societal resources that one generation receives from the previous one as hereditary property. The social status of a person is imposed on him. A person gets the social status of his parents. For example, a Dalit is supposed to do only traditional jobs like farming, scavenging or leatherwork. Because of that, he had very limited chances of getting jobs with higher pay. Such social inequalities were further aggravated by rules like marrying in the same caste. This prevented people from removing the boundary lines through mixed marriages.

c) The ways of faith or ideologies support Social stratification: 

If Social stratification is to continue through generations it must be proved to be inevitable. For example, the Jati system was justified through the ‘PurityPollution’ (suddha-asuddha) concept. This made Brahmins high caste and Dalits low caste merely by birth and profession. Not everyone approves inequality as a legitimate system. People with special privileges in the society support systems like Jati and Varna. But those who suffer contempt and negligence raise their voice against them.