988a.d
Christianity is in the USA, Brazil, Mexico, Russia, and China.
Christianity.
catholic
Orthodox Christianity
Yes
Christianity took hold in Kievan Russia after the 8th century. Greek missionaries from Byzantium were responsible to introducing the religion to Kievan Russia, more properly known as Kievan Rus.
Eastern Orthodox Christianity. Though there are a small amount of born-again Christians, Jewish people, and Muslims in Russia.
Christianity.
Orthodox Christianity
Orthodoxal Christianity
Nominal Christianity.
Hi, Personaly I believe that Russia's major religious group is many actually Christianity, Islam,Buddism,and Judism. But to answer your question Christianity is the most studied religion in the Soviet Union (RUSSIA).