the subsequent Arabization of the indigenous populations. The Arabs forged the Rashidun, Umayyad, Abbasid, and Fatimid caliphates, whose borders at their zenith reached southern France in the west, China in the east, Anatolia in the north, and Sudan in the south, forming one of the largest land empires in history. In the early 20th century, World War I signalled the beginning of the end of the Ottoman Empire, a Turkish polity that had ruled much of the Arab world since its conquest of the Mamluk Sultanate in 1517. The Ottoman defeat in World War I culminated in the 1922 dissolution of the empire and the subsequent partitioning of Ottoman territories, which formed some of the modern Arab states in the Mashriq. Following the adoption of the Alexandria Protocol in 1944, the Arab League was founded on 22 March 1945. The Charter of the Arab League endorsed the principle of a unified Arab homeland whilst respecting the individual sovereignty of its member states. Today, Arabs primarily inhabit the 22 member states of the Arab League. The Arab world stretches around , from the Atlantic Ocean in the west to the Arabian Sea in the east and from the Mediterranean Sea in the north to the Horn of Africa and the Indian Ocean in the southeast. People of non-Arab ethnicities associated with non-Arabic languages also live in these countries, sometimes as a majority; these include Somalis, Kurds, Berbers, the Afar people, Nubians, and various others. The ties that bind Arabs together are ethnic, linguistic, cultural, historical, identical, nationalist, geographical, and political. The Arabs have their own customs, language, literature, music, dance, media, cuisine, dress, society, sports, and mythology, as well as significant influence on Islamic architecture and Islamic art. Arabs have greatly influenced and contributed to diverse fields, notably architecture and the arts, language, Islamic philosophy, mythology, ethics, literature, politics, business, music, dance, cinema, medicine, science, and technology in ancient and modern history. Arabs are a diverse group in terms of religious affiliations and practices. In the pre-Islamic era, most Arabs followed polytheistic religions. However, some tribes had adopted Christianity or Judaism and a few individuals, known as the hanifs, apparently observed another form of monotheism. Presently, there is a sizable Christian minority in the Arab world. Arab Muslims primarily belong to the Sunni, Shia, Ibadi, and Alawite denominations. Arab Christians generally follow Eastern Christianity, such as those within the Oriental Orthodox