The earliest Chinese people did not have to worry about invasions from foreign countries because of their strong army and geography. The Chinese army present in ancient times were very strong and able to defend their lands. Chinese also build china wall in order to protect their lands from the invasion of other people. The geography of china also made difficult for the invaders to capture china.
Out of the following choices, the significance of the plane selections made by the terrorists on 9-11 were that all four planes were traveling long distances, so they had significant fuel on board to burn in the crashes.
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<span>1) educated people of the Middle Ages did NOT think (nor did the Church teach) that the earth was flat!! They had known otherwise for over two millennia! (Opposition to Columbus's plans was based on the belief that the world was LARGER than he thought, and the voyage too far to make safely. In fact, his CRITICS were correct about the earth's size!)
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