caption: Egypt Old Kingdom - early Egyptian history before the unification of Upper and Lower Egypt (when the pyramids were built) Middle Kingdom - 1 st period of history when Egypt is unified under one Pharaoh Capital of empire at Memphis, where the two kingdoms meet Theocracy - type of government in which rule is based on religious authority Developed solar calendar, geometry, and papyrus New Kingdom - 2 nd period of history when Egypt is unified Egypt was briefly taken over by nomadic invaders During this time they extended their borders farther than any other time period in Egyptian history
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