Final answer:
Poland, Hungary, and Czechoslovakia were once satellite states under Soviet control.
Step-by-step explanation:
Three current European countries that were once satellite states under Soviet control are Poland, Hungary, and Czechoslovakia. These countries were part of the Eastern Bloc and fell under Soviet influence after World War II. They were politically and economically aligned with the Soviet Union and were not independent until the collapse of the Soviet Union in 1991.
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