Under the Abbasids, Muslim civilization absorbed traditions from many cultures. In the process, a flourishing new civilization arose in cities from Baghdad to Córdoba. It incorporated all the people who lived under Muslim rule, including Jews and Christians.
The interior of the Great Mosque at Córdoba. The original 8th century mosque had 10 arcades. After Christians retook the city, the mosque became a Catholic cathedral.
The great works produced by scholars of the Abbasid period shaped Muslim culture and civilization. Through contacts in Spain and Sicily, Christian European scholars began to study Muslim philosophy, art, and science. Muslim scholars also reintroduced knowledge of Greco-Roman civilization to later Europeans.
Muslim ideas spread to other regions as well. In North Africa, for example, Arab Muslims settled and spread Arab customs, traditions, and language.
Muslim rulers united diverse cultures, including Arab, Persian, Egyptian, African, and European. Later, Mongols, Turks, Indians, and Southeast Asians joined the Muslim community. Muslim civilization absorbed and blended many of their traditions.
Merchants were honored in Muslim culture, in part because Muhammad had been a merchant. A traditional collection of sayings stated:
I commend the merchants to you, for they are the couriers of the horizon and God's trusted servants on Earth.
—Sayings of the Prophet