Bengali Hindus
Bengali Hindus () are an ethnic, linguistic, and religious population who make up the majority in the Indian state of West Bengal and Tripura. In Bangladesh they form the largest minority. They are Bengalis adherents of Hinduism, and are native to the Bengal region in the eastern part of the Indian subcontinent. Bengali Hindus speak Bengali, which belongs to the Indo-Aryan language family and adhere to the Shakta and Vaishnava traditions of their native religion, Hinduism. There are significant numbers of Bengali-speaking Hindus in different Indian states.
Hindi in Bihar
Despite the large number of speakers of Bihari languages, these languages have not been constitutionally recognised in India. Hindi is the language used for educational and official matters in Bihar, with English occasionally used in education and government. These languages was legally absorbed under the subordinate label of HINDI in the 1961 Census. Such state and national politics are creating conditions for language endangerments.