Answer:
The political divide between Western and Eastern Europe
Step-by-step explanation:
The Iron Curtain was a name given for the non-physical boundary between the two spheres of influence during the time between the end of WWII and the end of the Cold War.
The Iron Curtain separated the West and its allied states from the Soviet Union and its satellite states.
Separate military and economic alliances were formed on each side of the Curtain.
The purpose of the Iron Curtain was to block any open contact between these two areas of political influence.