With this event the Nile-land also entered upon a new era of development. The metropolis of the kingdom was once more shifted to the South, and, although the kings of the XIIth Dynasty actually resided in the North, their Theban origin was never forgotten, and Thebes was regarded as the chief city of the country. The XIth Dynasty kings actually reigned at Thebes, and there the later kings of the XIIIth Dynasty retired after the conquest of the Hyksos. The fact that with Thebes were associated all the heroic traditions of the struggle against the Hyksos ensured the final stability of the capital there when the hated Semites were finally driven out, and the national kingdom was re-established in its full extent from north to south. But for occasional intervals, as when Akhunaten held his court at Tell el-Amarna and Ramses II at Tanis, Thebes remained the national capital for six hundred years, till the time of the XXIId Dynasty. Another great change which differentiates the Middle Kingdom (XIth-XIIIth Dynasties) from the Old Kingdom was caused by Egypt’s coming into contact with other outside nations at this period. During the whole history of the Old Kingdom, Egyptian relations with the outer world had been nil. We have some inkling of occasional connection with the Mediterranean peoples, the _Ha-nebu_ or Northerners; we have accounts of wars with the people of Sinai and other Bedawin and negroes; and expeditions were also sent to the land of Punt (Somaliland) by way of the Upper Nile. But we have not the slightest hint of any connection with, or even knowledge of, the great nations of the Euphrates valley or the peoples of Palestine. The Babylonian king Narâm-Sin invaded the Sinaitic peninsula (the land of Magan) as early as 3750 b. c, about the time of the IIId Egyptian Dynasty. The great King Tjeser, of that dynasty, also invaded Sinai, and so did Snefru, the last king of the dynasty. But we have no hint of any collision between Babylonians and Egyptians at that time, nor do either of them betray the slightest knowledge of one another’s existence. It can hardly be that the two civilized peoples of the world in those days were really absolutely ignorant of each other, but we have no trace of any connection between them, other than the possible one before the founding of the Egyptian monarchy.