Russia has a population of over 100 million people composed of over 100 ethnic groups. The largest ethnic group is Russians, making up about 80% of the population, while other groups like Tatars, Ukrainians, Bashkirs, and Chuvash make up the remaining 20%. After the fall of the Soviet Union in 1991, several republics became independent countries while others joined organizations like NATO. Russia remains ethnically diverse with Slavs, Caucasians, and Turkic peoples forming the major heritages. Russian is the most widely spoken language though over 100 tongues are used across the country's varied regions.