Answer :

religion-
people are discriminated on the basis of religion this is mainly done to earn superiority over others 
caste-
people in ancient india were discriminated on the basis of castes.the higher caste used to treat the lower caste as slaves.
Sex-
there was a gender discrimination in india. the boys were allowed to go to school but girls were kept and taught to learn how to do he household works
1. discrimination on racism or ethnic like blacks were discriminated by whites.
2. regional discrimination in china
3. disability discrimination 






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