tamil is the national language of which country
Tamil language Tamil (English: /ˈtæmɪl/; தமிழ் Tamiḻ [t̪ɐmɨɻ],  pronunciation (help·info)) is a Dravidian language predominantly spoken by the Tamil people of India and Sri Lanka, and by the Tamil diaspora, Sri Lankan Moors, Burghers, Douglas, and Chindians. Tamil is an official language of two countries: Sri Lanka and Singapore.[11][12] It has official status in the Indian state of Tamil Nadu and the Indian Union Territory of Puducherry. It is used as one of the languages of education in Malaysia, along with English, Malay and Mandarin.[13][14] Tamil is spoken by significant minorities in the four other South Indian states of Kerala, Karnataka, Andhra Pradesh and Telangana and the Union Territory of the Andaman and Nicobar Islands. It is one of the 22 scheduled languages of India.
Languages of Bangladesh The official and de facto national language of Bangladesh is Modern Standard Bengali (Literary Bengali). It serves as the lingua franca of the nation, with 98% of Bangladeshis fluent in Bengali (including dialects) as their first language. English, having no official status, is prevalent across government, law, business, media and education, and can be regarded as the de facto co-official language of Bangladesh (see Bangladeshi English).[1][2] Hindi is understood by some as a foreign language.[3]