During the invasion of the barbarians, especially the Visigoths led by Alaric and the Huns led by Attila is very likely that the people who lived along the shores of the lagoon will be moved to the islands. Here they began to build houses, and then settled permanently over the years. Later, with the new barbarian invasions of the Lombards has accentuated the division between the mainland and islands. This allowed the Islanders to have greater autonomy both government and commercial.
Particularly important for the city is the 828, years in which was transported to Venice St. Mark's body to be buried later inside the famous Basilica that bears his name. This increased the importance of the city.
Around the year 1000 Venice and Genova rivals for supremacy at sea and monopolizes virtually all commercial traffic to the east.
The city is governed by a Doge (DUX Latin), and the city became the capital of the Venetian Republic, which was once one of the major European powers, the Venetian Republic was one of the longest lasting in history for over 1100 years
During the thirteenth and fourteenth century Venice and Genoa repeatedly clashed for supremacy in maritime trade.
The fall of the Byzantine Empire in 1453 undermines the Italian Maritime Republics of Venice and forced to seek new areas of influence, expanded its territory inward on the mainland.
During this period, between the end of the fourteenth century and the beginning of the fifteenth, many Venetian nobles acquired ownership of lans in this ares.
In these soils they start to build numerous villas, called Venetian Villas, and characterized by a higher core suitable to host the master with his family when he goes to visit his estates, joined by dependencies to the peasants and tool stores and warehouses.
At the height of his power, Venice controlled much of the Adriatic coast, many of the Aegean islands, including Crete, and it was among the major commercial forces in the Middle East. The territory of the Republic on the Italian peninsula extending into Lake Garda, the river Adda and also in Ravenna, which was able to influence the policy of the cities of Romagna, for example by supporting, in 1466, the takeover of Pino III Ordelaffi in Forlì, a city on which, however, Venice was never able to have a direct rule.
At the beginning of the sixteenth century, the Republic was one of the major European powers and wealth of traffic, the ability of diplomats and military commanders and the proper administration placed a higher level than that of other states of the time.
The territorial expansion of the Venetian Republic came into conflict with the interests of the Pope and foreign powers including France and Austria. After numerous wars fought in North Italy, Venice was able to save and consolidate its territory, but found himself completely isolated politically.
Venetian feature was that remittances were more secular. This attitude often put the city at odds with the Papacy.
The discovery of America had become less important the trade routes with the East and, at that time, the Turks were increasingly threatening.
Venice lost Cyprus and Crete after a war lasting 20 years including.
This left Venice exhausted.
Meanwhile, the nobility, merchant class of landed aristocracy was becoming cost-effective because the patricians were investing their assets in the acquisition of large estates in the "Venetian Mainland".
Inl eighteenth century Venice was one of the finest cities in Europe, with a strong influence on art, architecture and literature. His territory included the Veneto, Friuli, Istria, Dalmatia, Kotor, part of Lombardy and the Ionian islands. But after 1070 years of independence, May 12, 1797 the city surrendered to Napoleon Bonaparte. The Doge Ludovico Manin was forced to abdicate, the Great Council was disbanded and was proclaimed the Provisional Government of the Municipality of Venezia.
After the Third War of Independence, the plebiscite of 21 and 22 October 1866 sanctioned the annexation to the Kingdom of Italy.