The geography of the Korea kept it isolated from other nations. A mountain chain seals it off from China. The Sea of Japan is a treacherous body of water that separates it from Japan. Korea has been called the "Hermit Kingdom". In spite of this however, Korea has been conquered by other nations; China, Japan, the Mongols. Buddhism and Confucianism entered Korea from China.
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It's because Mercury, the planet, travels around the sun the fastest and has the shortest year. Hope this helps. :)
False bc blck people were not treated fairly still