language(s) Nepali Recognised regional languages Nepal Bhasa , Maithili , Bhojpuri , Telugu , Tharu , Gurung , Tamang , Magar , Awadhi , Sherpa , Kiranti , Limbu and other 100 different indigenous languages. Demonym Nepali Government Federal republic Unification  -  Kingdom declared 21 December 1768   -  State declared 15 January