Persian, Greek, Roman, and Arab Conquerors In 525 B., Cambyses, the son of Cyrus the Great, led a Persian invasion force that dethroned the last pharaoh of the 26th Dynasty. The country remained a Persian province until conquered by Alexander the Great in 322 BC, ushering in Ptolemaic rule in Egypt that lasted for nearly 300 years.
Following a brief Persian reconquest, Egypt was invaded and conquered by Arab forces in 642. A process of Arabization and Islamization ensued. Although a Coptic Christian minority remained--and remains today, constituting about 10% of the population--the Arab language inexorably supplanted the indigenous Coptic tongue. For the next 1,300 years, a succession of Arab, Mameluke, and Ottoman caliphs, beys, and sultans ruled the country.

European Influence The Ottoman Turks controlled Egypt from 1517 until 1882, except for a brief period of French rule under Napoleon Bonaparte. In 1805, Mohammed Ali, commander of an Albanian contingent of Ottoman troops, was appointed Pasha, founding the dynasty that ruled Egypt until his great- great grandson, Farouk I, was overthrown in 1952.
Mohammed Ali the Great ruled Egypt until 1848, ushering in the modern history of Egypt. The growth of modern urban Cairo began in the reign of Ismail (1863-79). Eager to Westernize the capital, he ordered the construction of a European-style city to the west of the medieval core. The Suez Canal was completed in his reign in 1869, and its completion was celebrated by many events, including the commissioning of Verdi's "Aida" for the new opera house and the building of great palaces such as the Omar Khayyam (originally constructed to entertain the French Empress Eugenie, and now the central section of the Cairo Marriott Hotel).
In 1882, British expeditionary forces crushed a revolt against the Ottoman rulers, marking the beginning of British occupation and the virtual inclusion of Egypt within the British Empire. In deference to growing nationalism, the U.K. unilaterally declared Egyptian independence in 1922. British influence, however, continued to dominate Egypt's political life and fostered fiscal, administrative, and governmental reforms.