Sun Language Theory
The Sun Language Theory (Turkish: Güneş Dil Teorisi) was a Turkish pseudolinguistic, pseudoscientific quasi-hypothesis developed in Turkey in the 1930s that proposed that all human languages are descendants of one proto-Turkic primal language. The theory's promotion of Turks as a progenitor race led to it finding favour among Turkish ultranationalists, who used it to justify their nationalist ideology.