How did Winston Churchill's "Iron Curtain" speech impact the Truman Doctrine? Churchill's famous speech convinced many Americans that the USSR was an enemy rather than an ally, which led to the creation of the Truman Doctrine. ... The USSR needed to protect its western border from future attacks.
B in a market economy the government doesn’t control many aspects of the economy
Answer:
The first airplane
Explanation:
It was powered, sustained, and controllable. This was never done by anyone in the world at the time.