440 giovanni tabacco
in 1131 in crossing the valley of Susa and reaching Turin, had been driven back
by the bishop of Turin, acting in collaboration with the city commune and
the German emperors. But Piedmont’s interest remained intact, despite the
far-flung and complicated political activities of the dynasty, and it was the
prelude to a future expansion. Meanwhile, among the various marquisates,
the territorial domination of the marquess of Montferrat, Boniface, had been
consolidated. He was a faithful ally of Henry VI and took part in his various
enterprises, but in Piedmont along the Po and the Tanaro he was tenacious
in opposing the communal republics of Asti, Alessandria and Vercelli, whose
dynamism he was able to cope with, even after the death of the emperor,
adapting himself prudently to the dominance of the resuscitated Lombard
League. To the south of the region dominated by this great league, which
was in fact tormented within and beset without by Cremona and its allies,
the Malaspina had emerged from among the various Obertenghi marquisates,
heavily fortified in their strongholds in the Apennines, between the republics
of Genoa and Piacenza, as had the Este, ever more attracted by Ferrara, which
was destined to become the fulcrum of their power.
To the east of the Lombard League, the communal republics in the hin-
terland of the Veneto reacted to the disappearance of the imperial threats by
achieving complete control of the various rural districts and absorbing their
ruling houses into the lives of the cities. Venice, meanwhile, was strengthen-
ing her character as an aristocratic and mercantile republic by developing the
administration of the city and defining the powers of the doge and the or-
gans of the city-commune. She also consolidated her power over the Lagoon,
the Istrian coast and the islands off Dalmatia and spread her influence both
through the hinterland, with the support of the commercial privileges granted
by the German empire, and on the seas, going as far as to threaten the very
survival of the Byzantine empire. North of the Lagoon, Friuli, known as an
ecclesiastical duchy, was still under the sway of the patriarch of Aquileia. It
gradually evolved a legal constitution based on the consolidation of customary
law, but suffered political interference by some of its powerful neighbours – the
counts of Gorizia, on account of their having the sympathy of the patriarchate
in this matter, and the cities of Treviso and Venice. North of the Veneto, the
princely bishopric of Trenta persisted with a ducal dignity in maintaining its
feudal structures and exemptions, with a complete lack of uniformity, main-
taining a juridically ambiguous position between the kingdoms of Italy and
Germany.
The failure of the imperial policies of Frederick I and Henry VI resolved itself
at the end of the twelfth century in an exuberant activity in the most varied
centres of political activity, from the Alps to the borders of the kingdom of the
south. It was not, however, a chaotic anarchy, since there were no areas which
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