The Late Period of ancient Egypt refers to the last flowering of native Egyptian rulers after the Third Intermediate Period in the 26th Saite Dynasty founded by Psamtik I, but includes the time of Achaemenid Persian rule over Egypt after the conquest by Cambyses II in 525 BC as well. The Late Period existed from 664 BC until 332 BC, following a period of foreign rule by the Nubian 25th Dynasty and beginning with a short period of Neo-Assyrian suzerainty, with Psamtik I initially ruling as their vassal. The period ended with the conquests of the Persian Empire by Alexander the Great and establishment of the Ptolemaic dynasty by his general Ptolemy I Soter, one of the Hellenistic diadochi from Macedon in northern Greece. With the Macedonian Greek conquest in the latter half of the 4th century BC, the age of Hellenistic Egypt began. Twenty-sixth Dynasty of Egypt The Twenty-Sixth Dynasty, also known as the Saite Dynasty after its seat of power the city of Sais, reigned from 672 to 525 BC, and consisted of six pharaohs. It started with the unification of Egypt under Psamtik I c. 656 BC, itself a direct consequence of the Sack of Thebes by the Assyrians in 663 BC. Canal construction from the Nile to the Red Sea began. Egypt seems to have expanded into the Near East early in this period. A wide range of archaeological finds from the Levant shows an Egyptian occupation and control in the late decades of the 7th century BC. These include various Egyptian objects from several sites, ostraca and documents showing a tribute/tax system, and evidence from the fortress of Mezad Hashavyahu. Egyptian influence reached to the Euphrates area in places such as Kimuhu and Quramati. Later they were pushed back by the defeat at Carcemish, although Egyptian intervention in the Near East seems to have continued after this battle. Amasis II followed a new policy and directed his interests toward the Greek world. He annexed Cyprus during his reign. To the south, Psamtik II led a great military expedition that reached deep into upper Nubia and inflicted a heavy defeat on them.