 Earth was divided into three "worlds".The First World, analogous in this context to what was called "the West", was composed of NATO members and other countries aligned with the United States.The Second World was the Eastern bloc in the Soviet sphere of influence, including the Soviet Union (15 republics including presently independent Estonia, Latvia, Lithuania) and Warsaw Pact countries like Poland, Bulgaria, Hungary, Romania, East Germany (now united with Germany), and Czechoslovakia (now split into the Czech Republic and Slovakia).