The island of S. Biagio, now called Giudecca, was once a green haven of orchards and gardens; here were a convent, a home for penitent prostitutes and a pilgrims’ hostel. But the secular world of Venice intervened. It became essentially a suburb of the city. Other islands were used as agricultural factories for the markets of the Rialto. In the second half of the fifteenth century the island now known as the Lido became an extension of Venice’s port. It became part of the economic zone that now encircled and sustained the city.
The beginning of the Venetian empire beyond the lagoon can be found in the ninth century. Venice was not as yet a leading sea-power. That position was reserved for the Spanish and for the North Africans. But it needed to control its immediate environment. It had to find, and maintain, a reliable food supply for an increasing population. It needed to secure access to water and to agricultural land. It needed to control the lifelines of its trade. So Venice turned to the mainland. The people of the sea were obliged to conquer
Towards the close of the ninth century Venice sacked the rival cities on the Italian coast and took control of the mouths of the Adige and Po rivers. The rivers gave them access to the markets of northern Italy; within a short time the bargemen of the city were offering their wares in Pavia, the capital of Lombardy. The merchants of Venice were prominent, too, in the markets of Verona and Cremona. In the tenth century Venetian markets and warehouses were built on the banks of the rivers Sile and Piave. The Venetians occupied a castle beside the Livenza river, so that their goods could reach the German traders coming down into Italy. By 977 the Venetian traders had a colony in Limoges, and by the next century they had diffused themselves into Marseilles and Toulouse. The corn-growing areas of Treviso and Bassano were acquired. In this period, too, the Venetians began the slow process of purchasing mainland property and territory. Some of the great families of Venice, like the Badoer and Tiepolo, acquired land around Treviso. The larger monasteries purchased estates along the coastal plain. This gradual enlargement of Venetian property continued for seven centuries. The key issue, as always, was that of commerce and in particular of the supply of grain.
Once the trade with northern Italy and much of Europe was considered secure, the governors of Venice turned their attention towards the sea. The merchants already effectively controlled the trade in eastern goods, but the success of that trade demanded that the routes to the East should be strengthened and defended. The sea was to be made safe for the mass transport of goods. The principal cities of Istria, immediately across the sea from Venice, submitted. The northern part of the Adriatic became known as the Gulf of Venice. Then the Venetian navy worked downwards. By the end of the tenth century it effectively controlled the Middle Adriatic, and set about the conquest of Dalmatia (now part of modern Croatia). The islands and cities of the region surrendered to the superior force and numbers of the Venetians. Some cities, more alarmed by the depredations of the pirates who found safe haven in the small islands and inlets along the Dalmatian coast, invited the doge and his troops to enter their gates. Other cities were tormented by the demands of the petty despots, characteristically living in fortress outposts, and preferred the more benign sovereignty of Venice. Other places were simply happy to enter stable trading relations with the great sea-city. All of them were treated as allies, rather than as subjects, of Venice. Yet in truth the empire was being born. The pirates were defeated. The marauding Slavs were pushed back from the coast. In 998, the doge added the honorific of “dux of Dalmatia” to his title.
