Original sentence: : Sovetsky Soyuz), was a in much of the northern region of Eurasia that existed from 1922 until its dissolution in 1991.Officially (according to its Constitution) it was a socialist state, but the political organization of the country was defined by the only permitted political party, the Communist Party of the Soviet Union.Probably due to this reason it was sometimes called "communist state" in Western countries
Edited sentence: : Sovetsky Soyuz), was a Communist state in much of the northern region of Eurasia that existed from 1922 until its dissolution in 1991