Final answer:
Poland, Czech Republic, and Romania were once satellite states under Soviet control.
Step-by-step explanation:
The three current European countries that were once satellite states under Soviet control are Poland, Czech Republic, and Romania.
These countries were part of the Eastern Bloc during the Cold War and had communist governments installed by the Soviet Union. They were politically and economically controlled by the Soviets until the collapse of the Soviet Union in 1991.
Learn more about Satellite states under Soviet control in Europe