The Egyptians are fairly heterogeneous people. Mediterranean (such as Greek and Italian) and Arab influences appear in the North, and there are indigenous black populations in the South. Many theories has been proposed on the origins of the Egyptians, however none are conclusive, and the most widely accepted theory is that Egyptian society was the result of a mix of east african and asiatic people who moved to the Nile Valley after the ice age. The bulk of Modern Egyptian society are heterogeneous but maintain cultural ties to the ancient Egyptian society which has always been regarded as rural and most populous compared to the neighbouring demographics. The Egyptian people spoke only languages from the Afro-Asiatic family (previously known as Hamito-semitic)
Before the construction of dams on the Nile, particularly the Aswan High Dam (started in 1952, completed in 1970), the fertility of the Nile Valley was sustained by the water flow and the silt deposited by the annual flood. Sediment is now obstructed by the Aswan High Dam and retained in Lake Nasser. The interruption of yearly, natural fertilization and the increasing salinity of the soil has been a manageable problem resulting from the dam. The benefits remain impressive: more intensive farming on thousands of square kilometres of land made possible by improved irrigation, prevention of flood damage, and the generation of millions of gigajoules of electricity at low cost.
As of 1990, Egyptian Islam was a complex and diverse religion. Although Muslims agreed on the faith's basic tenets, the country's various social groups and classes applied Islam differently in their daily lives. The literate theologians of Al-Azhar University generally rejected the version of Islam practiced by illiterate religious preachers and peasants in the countryside. Most upper- and middle-class Muslims believed either that religious expression was a private matter for each individual or that Islam should play a more dominant role in public life. Islamic religious revival movements, whose appeal cut across class lines, were present in most cities and in many villages.
The Royal Library of Alexandria was once the largest in the world. It is usually assumed to have been founded at the beginning of the 3rd century BC during the reign of Ptolemy II of Egypt after his father had set up the Temple of the Muses or Museum. The initial organization is attributed to Demetrius Phalereus. The Library is estimated to have stored at its peak 400,000 to 700,000 scrolls.
In the last quarter of the 20th century, Egyptian music was a way to communicate social and class issues. One popular modern pop singer is Amr Diab.
Egypt is on good terms with all of its neighbours, and was the first Arab nation to make peace with Israel. It has a territorial dispute with Sudan over the Hala'ib Triangle
Ethnic minorities include a small number of Bedouin Arab nomads in the Sinai and eastern and western deserts, as well as some Nubians clustered along the Nile in Upper (southern) Egypt who are estimated for about 0.8% of the population.
Modern Egypt is ted by Arabs, who have multiple distinct forms in common and divergent styles across North Africa and the Middle East. Arab musical tradition is usually said to have begun in the 7th century in Syria during the Umayyad dynasty. Early Arab music was derived from Byzantine, Indian and Persian forms, which were themselves very influenced by earlier Greek and Semitic music. In the 10th century, Al-Farabi translated Aristotle's Problems (and Themistius' commentary on them), Euclid's Elements of Music and Ptolemy's Harmonics into Arabic. These works, foundations of Western music, became the basis for Arabic musical theory.
A primarily male spiritual manifestation is Sufism, an Islamic mystical tradition. Sufism has existed since the early days of Islam and is found in all Islamic countries. The name derives from the Arabic word suf (wool), referring to the rough garb of the early mystics. Sufism exists in a number of forms, most of which represent an original tarika developed by an inspired founder, or shaykh. These shaykhs gradually gathered about themselves murids, or disciples, whom they initiated into the tarika. Gradually the murids formed orders, also known as turuq, which were loyal to the shaykh or his successors. The devotions of many Sufi orders center on various forms of the dhikr, a ceremony at which music, body movements, and chants induce a state of ecstatic trance in the disciples. Since the early 1970s, there has been a revival of interest in Sufism. Egypt's contemporary Sufis tend to be young, college-educated men in professional careers.
Under Islam, Egypt continued to be a great source of literary endeavour, now in the Arabic language. In 970, al-Azhar University was founded in Cairo, which to this day remains the most important centre of Sunni Islamic learning. In the 12th century Egypt, the Jewish talmudic scholar Maimonides produced his most important work.
Traditionally, the Coptic language was used in church services, and the scriptures were written in the Coptic alphabet. However, due to the arabisation of Egypt, service in churches started to witness increased use of Arabic, while preaching is done entirely in Arabic.
Egypt's peculiar geography made it a difficult country to attack, which is why Pharaonic Egypt was for so long an independent and self-contained state. Once Egypt did succumb to foreign rule; however, it proved unable to escape from it, and for 2,300 years Egypt was governed by foreigners: Persians, Greeks, Romans, Byzantines, Arabs, Turks and British. When President Nasser (President 1954-1970) once said that he was the first native Egyptian to exercise sovereign power in Egypt since the last Pharaoh, Nectanebo II, was deposed by the Persians in 343 BC, he was only slightly exaggerating.
During the first few centuries of the Christian era, Egypt was the ultimate source of a great deal of ascetic literature in the Coptic language. Egyptian monasteries translated many Greek and Syriac works, which are now only extant in Coptic.
The 20th century has seen Cairo become associated with a roots revival. Musicians from across the Arab world have kept folk traditions alive, while Nubians, Saiyidis and Bedouins have established their own scenes. New varieties of folk and pop have also arisen from the Cairo hit factory
Disruptive social changes and Sadat's relative tolerance toward political parties contributed to the rapid growth of Islamic groups in the 1970s. On university campuses, for example, Sadat initially viewed the rise of Islamic associations (Gama'at Islamiya) as a counterbalance to leftist influence among students. The Gama'at Islamiya spread quite rapidly on campuses and won up to one-third of all student union elections. These victories provided a platform from which the associations campaigned for Islamic dress, the veiling of women, and the segregation of classes by gender. Secular university administrators opposed these goals. In 1979 Sadat sought to diminish the influence of the associations through a law that transferred most of the authority of the student unions to professors and administrators. During the 1980s, however, Islamists gradually penetrated college faculties. At Asyut University, which was the scene of some of the most intense clashes between Islamists and their opponents (including security forces, secularists, and Copts), the president and other top administrators--who were Islamists--supported Gama'at Islamiya demands to end mixed-sex classes and to reduce total female enrollment.