The correct answer is B.
When you think of a curtain, it always divides something, even in its most literal sense (it divides a window from a room). The Iron Curtain was a specific ideological division between the Soviet Union and the West during the Cold War.
So the president doesn't have to make all the decisions by himself.
I would say C. Good luck!
Answer:
The Hippodrome of Constantinople was an arena used for chariot racing throughout the Byzantine period. First built during the reign of Roman emperor Septimius Severus in the early 3rd century CE, the structure was made more grandiose by emperor Constantine I in the 4th century CE.
Explanation: