If you were writing an essay describing the impact of the cold war on the culture of the united states, what would be the best first sentence?

a - the cold war was between the united states and the soviet union.

b - the cold war may have been the most expensive war in united states history.

c - fighting the cold war threatened to destroy the values it was being fought to defend.

d - american efforts to stop the spread of communism ensured a stronger relationship with western europe.