Satellite nations were countries under the control of

a. the United States.

c. France.

b. Great Britain.

d. the Soviet Union.

Satellite nations were countries under the control of the Soviet Union. The corret option among all the options given in the question is option "d". The term "Satellite Nations" were prevelant during the period of Cold War. This was a term that was used to describe the states or countries that were either directly under the influence of Soviet Union or under the pressure of Soviet Union. The countries that were referred to as Satellite Nations were Romania, Bulgaria, Czechoslovakia, Poland and East Germany. It was actually the United States of America that started using the term Satellite Nations.