Karelian language
The effort was dropped in 1940 and Finnish (written as always in the Latin alphabet) once again became an official language of the Karelian SSR, while in the Tver region most Karelians were expelled in 1939 and Karelian was banned there. The reason for abandoning Cyrillic, and the Karelian language itself, as the national language of the republic may have two explanations: