In the middle of the same century, Pisa rose into eminence for its
commerce; it traded principally with the Saracen king of Sicily, and with
Africa. The Genoese also, at this period, are represented as possessing a
large portion of the trade of the Levant, particularly of Joppa.
As the most lucrative branch of commerce of all the Italian states was that
in the productions of the East, and as these could only be obtained through
Constantinople or Egypt, each state was eager to gain the favor of rulers
of these places. The favor of the Greek emperor could be obtained
principally by affording him succours against his enemies; and these the
Venetians afforded in 1082 so effectually, that, in return, they were
allowed to build a number of warehouses at Constantinople, and were
favoured with exclusive commercial privileges. Dalmatia and Croatia were
also ceded to them.
We now come to the period of the crusades, from which may be dated the
rapid increase of the commerce and power of the Italian states. As none of
the other European powers had ships numerous enough to convey the crusaders
to Dalmatia, whence they marched to Constantinople, the fleets of Venice,
Pisa, and Genoa were employed for this purpose.
