The answer is D. economic problems in one nation spread to other nations.
Answer: The correct answer is A-Plato.
Explanation: It was founded in 428 B.C. by Plato and he called it The Academy.
Both had the economy booming, meaning they were both thriving with new homes, cars, and a lot of wealth. but in the 1950s were also an era of great conflict. For example, the nascent civil rights movement and the crusade against communism