He Helped the Peace process in the Middle East
The attempt to stop communism from spreading to Greece and Turkey after World War II was due to the Truman Doctrine.
The Truman Doctrine was a law proposed by US President Harry Truman. His goal was to stop the spread of communism (also known as containment). To ensure that Greece and Turkey (which are close to the Soviet Union) did not fall under the control of a communist nation, the US agreed to give $400 million to these countries. The goal was to help these countries recover from World War II as well as develop a political and economic alliance.
It looks like the cartoon is sort of mocking the Nazis. Or comparing it to America. You can tell my the symbol of the dude on the right’s shirt..
Maurya Empire and Gupta Empire are the most significant but there has been more than that.
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This refers to the great depression so the answer is D. I hope this helps