What reason did the soviet union give for its expansion after world war ii?

Stalin wanted a "sphere of influence" formed of Eastern European countries, like Ukraine and Belarus, as Germany had attacked the Soviet Union from the west during both World Wars, and the U.S.S.R. had no geographical protection at its western border. At the same time, Stalin wanted to expand Soviet influence throughout Europe.

C) the conditions in the factory have never been questioned by the employee.