restored its rule in much of Italy and Spain. Missionaries sent from Ireland by the Pope helped to convert England to Christianity in the 6th century as well, restoring that faith as the dominant in Western Europe. Muhammed, the founder and Prophet of Islam was born in Mecca in AD 570. Working as a trader he encountered the ideas of Christianity and Judaism on the fringes of the Byzantine Empire, and around 610 began preaching of a new monotheistic religion, Islam, and in 622 became the civil and spiritual leader of Medina, soon after conquering Mecca in 630. Dying in 632, Muhammed's new creed conquered first the Arabian tribes, then the great Byzantine cities of Damascus in 635 and Jerusalem in 636. A multiethnic Islamic empire was established across the formerly Roman Middle East and North Africa. By the early 8th century, Iberia and Sicily had fallen to the Muslims. By the 9th century, Malta, Cyprus, and Crete had fallen – and for a time the region of Septimania. Only in 732 was the Muslim advance into Europe stopped by the Frankish leader Charles Martel, saving Gaul and the rest of the West from conquest by Islam. From this time, the "West" became synonymous with Christendom, the territory ruled by Christian powers, as Oriental Christianity fell to dhimmi status under the Muslim Caliphates. The cause to liberate the "Holy Land" remained a major focus throughout medieval history, fueling many consecutive crusades, only the first of which was successful (although it resulted in many atrocities, in Europe as well as elsewhere). Charlemagne ("Charles the Great" in English) became king of the Franks. He conquered Gaul (modern day France), northern Spain, Saxony, and northern and central Italy. In 800, Pope Leo III crowned Charlemagne Holy Roman Emperor. Under his rule, his subjects in non-Christian lands like Germany converted to Christianity. After his reign, the empire he created broke apart into the kingdom of France (from Francia meaning "land of the Franks"), Holy Roman Empire and the kingdom in between (containing modern day Switzerland, northern-Italy, Eastern France and the low-countries). Starting in the late 8th century, the Vikings began seaborne attacks on the towns and villages of Europe. Eventually, they turned from raiding to conquest, and conquered Ireland, most of England, and northern France (Normandy). These conquests were not long-lasting, however. In 954 Alfred the Great drove the Vikings out of England, which