Muslims
529
Mohammed died in 632 in Medina. He had been both spiritual leader
and civil governor of his Muslim polity, and there was no appointed suc-
cessor. His fathers-in-law and sons-in-law succeeded him, but then the
Muslims became disunifi ed. Infi ghting between factions characterized the
Muslim empire for the rest of the Middle Ages. Shi’ites would only follow
those who could claim descent from Mohammed’s family, while the major-
ity Sunnis were willing to follow any strong caliph.
During the same time, the Byzantine Empire and the Persian Empire
had been frequently at war between 571 and 630. Both empires had lost
many soldiers, destroyed much property, and drained their savings. The
boundary zone was just north of Arabia. It included modern-day Egypt,
Israel, Syria, Jordan, Lebanon, Turkey, and Iraq. The city of Jerusalem was
particularly damaged by conquest and reconquest. With Jerusalem, the an-
cient cities of Damascus, Alexandria, Caesarea, Antioch, and Nineveh were
ruined. Rural areas of Armenia, Asia Minor (Turkey), and Mesopotamia
were depopulated and could barely feed themselves. The armies that de-
fended these territories were mercenaries who were accustomed to guarding
city walls.
Under the fi rst caliphs after Mohammed’s death, the Arab tribes and
their allies set out to conquer their known world. They met little resistance.
Relatively small, untrained armies of Arabs on camels and horses were able
to conquer enormous swathes of territory and overcome armies that would
once have rolled over them. They occupied Damascus in 636, and Ctesi-
phon, Persia’s capital, in 637. In 638, they took Jerusalem, and then Cae-
sarea and Alexandria in 640 and 641.
After conquest, conversions were only forced on pagans who worshiped
idols. Jews and Christians were termed “People of the Book” because, like
Muslims, they looked to a written revelation for moral and theological
guidance, rather than to an idol. They were not forced to convert, although
they lived under restrictions and blatantly discriminatory laws. Muslim rul-
ers followed a principle of taxing non-Muslims with a special tax called a
jizya. In fact, the tax income of the empire relied on non-Muslims not con-
verting. As more of the conquered peoples became Muslims, tax income
dropped, which pushed the armies of Islam to try for more conquest. Non-
Muslims faced legal discrimination in addition to a special tax. Those who
did not recognize Mohammed as Allah’s only prophet were, in the eyes of
Islamic law, already not able to tell the truth. Therefore, non-Muslims were
not permitted to testify in court against a Muslim.
Muslim Europe
Early medieval Spain was ruled by the Visigoths, a Germanic tribe that
had invaded the Roman province of Hispania in the seventh century.
The Umayyad general Tariq ibn Ziyad, a North African Berber, rapidly