Most peoples of the Middle East today call themselves Arabs. In part this reflects an ethnic heritage, since Arabian tribes in the 600s and 700s intermarried with local populations and extended their influence throughout the region. More significant, however, is the common linguistic heritage of people who speak Arabic, a Semitic language related to Hebrew.
The people of Iran, on the other hand, are distinct from Arabs. Their language, Farsi or Persian, is an Indo-European tongue, meaning that it shares a common heritage with most languages of India and Europe—including English. Ethnically, Iranians are also more closely related to Indians and Europeans than they are to Arabs. Their distinction is reflected in the fact that Iranians embrace the Shi'ite form of Islam rather than the majority Sunni interpretation.
During the Middle Ages, Arab culture and the Arabic language spread throughout the Middle East. Islamic law at that time prohibited translation of the Koran from the original Arabic, which furthered the spread of the language; but the cultural identity of Persia (as Iran was called at that time) was so strong that its people resisted the Arab influence. Persians adopted Arabic-style lettering, yet retained their own language and literature. Eventually Farsi and Arabic both became common languages in the Middle East, often used by people from different groups as a means of communicating.
Shown; therefore it was usually represented either with a veil, or covered by a glowing fire.
During the Middle Ages, mosques took on the form that they would retain to the present day, including an open courtyard and "horseshoe" arches modeled on the rounded Roman arches of Byzantium. Minarets became a striking feature of mosque architecture, and the mosques themselves were beautifully decorated in a style of ornamentation known as arabesque (air-uh-BESK). Arabesque, which decorated virtually every available surface, was characterized by graceful flourishes and ornate, flowery lines. Much of it was non-representational, but on secular buildings such as palaces, it might include plants, animals, and even human figures.
Arabian music, based on a five-note scale that gave it a distinctive, haunting sound, developed during medieval times. Early Islamic music grew out of oral poetry, with flutes, stringed instruments, and percussion complementing the poet's song. Sometimes professional female dancers also accompanied the performance.