There is no such thing as the Russian empire
Byzantine Empire
Byzantine Empire
Depends what Russian Empire you are talking about...
the Russian empire
the Russian empire is bigger than the sovient union
Russian Orthodoxy
The Russian Orthodox Church was dominant during Tsarist Russia. It was virtually the state religion of Russia. Many inhabitants of Russia were Muslim, (especially in area near the Ottoman Empire in southern Russia) but the dominant religion was Russian Orthodox.
The Russian empire no longer exists and therefore is no loner in any country.
Northwestern Front - Russian Empire - was created in 1914.
Ministry of Justice of the Russian Empire ended in 1917.
Ministry of Police of the Russian Empire ended in 1819.