When considering major kingdoms, the Middle Egyptian Kingdom lasted for 355 years, noted for its stability compared to others like the Persians (220 years), Romans (244 years), and British (311 years). The last transition of this Kingdom occurred during Dynasty 13, which saw around fifty rulers over approximately 150 years. The Achaemenid reign in Egypt concluded with Alexander the Great's conquests in 332 BC, thereafter being ruled by the Hellenic Pharaohs of the Ptolemaic Dynasty.
