It was isolationist.
The Americans were in the midst of rebuilding their economy that was now
improving after the Great Depression and the effects of World War II. Many did not want to go to another war but
after witnessing the atrocities committed by the Axis powers in Europe and
Asia, they realize that it would only be a matter of time before they would be
involved in the war. When the Japanese
bombed Pearl Harbor the U.S. officially joined the war on the side of the
allies.
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D because they want the nation to be safe from foreign attacks.
The Ming dynasty was a Chinese dynasty different from the dynasty that existed before it. It objectified a defeat over any domestic or foreign threat. The dynasty projected China's power to foreign land.
<h3>Effect of the stopping on China</h3>
By 1449, many tribes unified and their attacks and counterattacks were to haunt the Ming Dynasty for almost two centuries till its fall. The act forced military attention to be focused on the north. However, the circumstance in the south was not good as well. Consequent to lack of diplomatic attention, pirates and smugglers again were active in the South China Sea.
Therefore, the effect was enormous on the south was massively negative on China.
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They win the war in January