Most parts of Karelia belong to Russia today. Small parts of Karelia belongs to Finland. In Russian side Karelia is Republic of Karelia. In Finnish side there are provinces of North Karelia and South Karelia.
Original people of Karelia are Karelians. Karelian people speaks Karelian, that is a Finnic language very close to Finnish. Karelians knew many old poems. Many poems of Finnish book Kalevala are from Karelians. Today in republic of Karelia Karelians are minority and Russians are majority. Some people fear Karelian culture and language die out.
Most parts of Karelia was part of Finland until Second World War. East Karelia was not. While making peace Finland had to give most parts of Karelia to Soviet Union that is now known as Russia. After peace many people from Soviet Union came to live in Karelia.