5000 BC Egyptian culture already well established in the Nile Valley, with Neolithic farming villages. 3200 BC Menes united Lower Egypt (the delta) with his own kingdom of Upper Egypt. 2800 BC The architect Imhotep built the step pyramid at Sakkara. c. 2600 BC Old Kingdom reached the height of its power and the kings of the 4th dynasty built the pyramids at Giza. c. 2200-1800 BC Middle Kingdom, under which the unity lost towards the end of the Old Kingdom was restored. 1730 BC Invading Asian Hyksos people established their kingdom in the Nile Delta. c. 1580 BC New Kingdom established by the 18th dynasty, following the eviction of the Hyksos, with its capital at Thebes. High point of ancient Egyptian civilization under pharaohs Thothmes, Hatshepsut, Amenhotep, Ikhnaton (who moved the capital to Akhetaton), and Tutankhamen. c. 1321 BC 19th dynasty: Ramses I built a temple at Karnak, Ramses II the temple at Abu Simbel. 1191 BC Ramses III defeated the Indo-European Sea Peoples, but after him there was decline, and power within the country passed from the pharaohs to the priests of Ammon. 1090-663 BC Late New Kingdom Egypt was often divided between two or more dynasties; the nobles became virtually independent. 8th-7th centuries BC Brief interlude of rule by kings from Nubia. 666 BC The Assyrians under Ashurbanipal occupied Thebes. 663-609 BC Psammetichus I restored Egypt's independence and unity. 525 BC Egypt was conquered by Cambyses and became a Persian province. c. 405-340 BC A period of independence. 332 BC Conquest by Alexander the Great. On the division of his empire, Egypt went to one of his generals, Ptolemy I, and his descendants, the Macedonian dynasty. 30 BC Death of Cleopatra, last of the Macedonians, and conquest by the Roman emperor Augustus; Egypt became a province of the Roman and Byzantine empires. AD 641 BC Conquest by the Arabs; the Christianity of later Roman rule was for the most part replaced by Islam. For later history, see Egypt.