What is the major ethnic group in western russia?

Slavic people

Explanation:

Russia has a population of over 185 ethnic groups. Many people regard themselves as Russian or Tatars, while others classify themselves as Samis or Kets. All these groups had an influence on Russia's culture but the Slavic ethnic groups are the major ethnic group. The Slavic people are Indo-European people who speak the Slavs language. The Slavs are traditionally divided into two in terms of Religion namely Eastern Orthodox and Roman Catholic Church.

brave new world, aldous huxley (1932)

the mediterranean sea