帝国的盛衰埃及的地理相对封闭,尼罗河定期泛滥,使两岸狭长的谷地变得非常肥沃,而谷地两边则是茫茫沙漠。这样,在这狭长的河谷之内,伟大的埃及文明就保持了4 000年,直到公元前后最终消亡。历史学家们把古埃及历史划分为三十一个王朝,在这三十一个王朝 The rise and fall of the Empire Egypt’s geography is relatively closed, the Nile flood regularly, so that the narrow valleys of the two sides become very fertile, while the valleys are vast desert. Thus, within this narrow valley, the great Egyptian civilization remained for 4,000 years until it finally died out. Historians divided the history of ancient Egypt into thirty-one dynasties in these thirty-one dynasties