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When a group of people or communities are excluded from the majority because of their language, customs or religion, it is called Marginalisation. In India, you can take the example of Dalits or Muslims who are considered minority communities. The reasons for the high incidences of poverty and deprivation among the marginalized social groups are to be found in their continuing lack of access to income-earning capital assets (agricultural land and non-land assets), heavy dependence on wage employment, high unemployment, low education, and other factors. To marginalize is the process of relegating or confining to a lower or outer limit or edge, as of social standing. ... An example of marginalization at the individual level is the exclusion of single mothers from the welfare system prior to the welfare reform of the 1900s.