Swedish ( ) is a North Germanic language spoken predominantly in Sweden and in parts of Finland. It has at least 10 million native speakers, the fourth most spoken Germanic language and the first among any other of its type in the Nordic countries overall. Swedish, like the other Nordic languages, is a descendant of Old Norse, the common language of the Germanic peoples living in Scandinavia during the Viking Era. It is largely mutually intelligible with Norwegian and Danish, although the degree of mutual intelligibility is largely dependent on the dialect and accent of the speaker. Written Norwegian and Danish are usually more easily understood by Swedish speakers than the spoken languages, due to the differences in tone, accent, and intonation. Standard Swedish, spoken by most Swedes, is the national language that evolved from the Central Swedish dialects in the 19th century and was well established by the beginning of the 20th century. While distinct regional varieties and rural dialects still exist, the written language is uniform and standardized. Swedish is the most widely spoken second language in Finland where it has status as co-official language. Swedish was long spoken in parts of Estonia, although the current status of the Estonian Swedish speakers is almost extinct. It is also used in the Swedish diaspora, most notably in Oslo, Norway, with more than 50,000 Swedish residents. Classification Swedish is an Indo-European language belonging to the North Germanic branch of the Germanic languages. In the established classification, it belongs to the East Scandinavian languages, together with Danish, separating it from the West Scandinavian languages, consisting of Faroese, Icelandic, and Norwegian. However, more recent analyses divide the North Germanic languages into two groups: Insular Scandinavian (Faroese and Icelandic), and Continental Scandinavian (Danish, Norwegian, and Swedish), based on mutual intelligibility due to heavy influence of East Scandinavian (particularly Danish) on Norwegian during the last millennium and divergence from both Faroese and Icelandic. By many general criteria of mutual intelligibility, the Continental Scandinavian languages could very well be considered dialects of a common Scandinavian language. However, because of several hundred years of sometimes quite intense rivalry between Denmark and Sweden, including a long series of wars from the 16th to 18th centuries, and the nationalist ideas that emerged during the late 19th and early 20th centuries, the languages have separate orthographies, dictionaries, grammars, and regulatory bodies. Danish, Norwegian, and Swedish are thus from a