The book of the outstanding researchers A.G.Vinogradov and S.V.Zharnikova "Proto-homeland of the Indo-Europeans. Part 3. East Europe as a proto-homeland of the Indo-Europeans " is devoted to research of an ancestral home Indo-European peoples: Indian, Iranian, Slavic, Baltic, Germanic, Celtic, Roman, Albanian, Armenian and Greek language groups. The second part of this great work is devoted to the archaeology ofthe Indo-European homeland. The birth of their rituals and traditions.This problem faces to a science enough long time. The given encyclopedic work answers the such question. The book was written in 1989-90g. but in Russia could not be posted. Since that time, there were additional materials, confirming the view of the authors.