THE ARABS IN ECLIPSE
By the 11th century the Arab world no longer could defend itself, and would be dominated for eight centuries by outsiders. For most of this period the conquerors were not European Christians, but Turkish Muslims. Beginning in the 10th century, they no longer entered the Arab world as mercenaries and slaves, but as intact tribes. The most successful were the Seljuqs, who controlled Iran by the mid-10th and Iraq and Syria by the mid-11th century, and tried unsuccessfully to stabilize the Armenian frontier with the Byzantines. Uncontrolled bands of warriors gradually pushed the frontier toward Constantinople. Out of this chaos, another Turkish tribe, the Osmanli (Ottomans) gradually became paramount and completed the conquest of the Byzantine empire in 1453. The Ottoman Empire expanded for two more centuries, reaching its height under Elizabeth I's contemporary Suleiman, known to the Turks as the Lawgiver and to Europeans as the Magnificent. At its greatest extent, the empire included Crimea, the Balkans and Hungary (Vienna was besieged twice but never taken), and virtually the entire Arab world, including Syria, Palestine, Iraq, the Hijaz, Egypt, Libya, Tunis, and Algeria.
Beginning about the same time as the Seljuqs were arriving in Baghdad, Christian forces went on the offensive at the other end of the empire, beginning with a slow but inexorable re-conquest that gave Spain its greatest heroes in El Cid in the 10th and Ferdinand and Isabella in the 15th centuries. In 1071 the Seljuqs defeated the Byzantines at Manzikert (near Lake Van in eastern Turkey), captured the emperor, and caused the Pope to call for a Crusade, the first of many over the next two centuries, but mere pinpricks that had more impact on the Europeans than on the Arabs. Not until Napoleon's short-lived invasion of Egypt did the Europeans again attack the core of the Arab world. In the first half of the 19th century, Europeans were interested chiefly in trade and transit. This led first to mapping routes, then to bases at strategic points along those routes to resupply ships and put down piracy, and finally to full-fledged colonization by France and Britain.