Russian
Russian is one of the most common languages in Eurasia. The majority of Russian-speaking people live in Eastern Europe and the former Soviet Union. In terms of prevalence, Russian it ranked first in the Slavic language group, covering the largest area in terms of population in Asia and Europe. No wonder many foreigners try to at least superficially learn Russian colloquial speech, but not everyone suceeds. Given the fact that almost all Russian-speaking countries have wide sales market and try to establish business relations with other countries, today translation into Russian is a very popular service.
Russian is a very complex language which is not an exaggeration. In order to thoroughly examine the spelling or learn basic rules of Russian, while applying them in practice, foreigners need much more than one year.