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China Geography Challenge Answers 1. The Yellow Sea, East China Sea and South China Sea influenced China’s history because they may have provided protection from the east and allowed China to trade with other countries. 2. The areas controlled by various dynasties kept expanding because the population might have increased, causing people to move into areas that were less populated. Also, various rulers might have used force to add territories. 3. The Huang He and Chang Jiang Rivers were important to the early history of China because they would have provided water for farming. 4. The dynasty that controlled the smallest area of China was the Shang and the dynasty that controlled the largest area of China was the Han. 5. Approximately 1,200 years were between the time a Chinese dynasty controlled the smallest and largest area. The Han dynasty never expanded into the southwest or the far northeast because these areas might have been unsuitable for settlement because of geographic features such as mountains and deserts or extreme weather conditions. Also, the people may have been too strong to be conquered. 6. The Great Wall might have been built as protection against the people who lived in the north or to prevent people from moving north. 7. The Han was the dynasty that controlled territories that are not part of modern China. Vietnam and Korea are the two present-day countries south and northeast of China that were controlled by this dynasty. 8. The majority group in China today calls itself the “Han people” because they believe they are the descendants of the people who controlled the largest area of ancient China. They might live in the southwest or the northeast since these areas were not controlled by the Han dynasty.