He brought back $850 in his win that night in madison square garden
They have different culture , like ... Foods + Tradition and more .
Answer:
The Cold War between the U.S. and Soviet Union originated from postwar disagreements, conflicting ideologies, and fears of expansionism. At both the Yalta Conference and Potsdam Conference, U.S. and Soviet leaders sharply disagreed over the future of the post-war world.

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The Cold War | Boundless US History
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What happened? The massacre was a street fight between British soldiers, snow balls, sticks, stone's and more were thrown. 7 colonist died.
-Seth
The answer is D, both civilizations declined under circumstances that are still not entirely clear to historians