Which ethnic group was successful in their attempt to separate from another country and from their own nation

The Bengalis constituted the ethnic group which was successful in their attempt to separate from another country and from their own nation.

Bengali nationalism refers to a kind of nationalism that centers on Bengalis as a singular nation. It constitute one of the four fundamental principles according to the original Constitution of Bangladesh. This triggered the creation of the Independent nation state of Bangladesh through the 1971 liberation war.

really and truely i dont know sorry

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