In the 12th century the essentials for the power of Venice were laid: the Arsenal was under construction in 1104; Venice wrested control of the Brenner pass from Veronia in 1178, opening a lifeline to silver from Germany; the last autocratic doge, Vitale Michiele, died in 1172.
Early in the 15th century, as new mainland territories were expanded, the first standing army was organized, consisting of condottieri on contract. In its alliance with Florence in 1426, Venice agreed to supply 8,000 cavalry and 3,000 infantry in time of war, and 3,000 and 1,000 in peacetime. Later in that century, uniforms were adopted that featured red-and-white stripes, and a system of honors and pensions developed. Throughout the 15th century, Venetian land forces were almost always on the offensive and were regarded as the most effective in Italy, largely because of the tradition of all classes carrying arms in defense of the city and official encouragement of general military training.
Venetian ambassadors sent home still-extant secret reports of the politics and rumours of European courts, providing fascinating information to modern historians.
In the 14th century, many young Venetian men began wearing tight-fitting multicolored hose, the designs on which indicated the Compagnie della Calza ("Trouser Club") to which they belonged. The Senate passed sumptuary laws, but these merely resulted in changes in fashion in order to circumvent the law. Dull garments were worn over colorful ones, which then were cut to show the hidden colors -- which resulted in the wide spread of men's "slashed" fashions in the 15th century.
Kingdom of Lombardy-Venetia (Italian: Regno Lombardo-Veneto) was established after the defeat of Napoleon, according to the decisions of the Congress of Vienna (9 June 1815). The Kingdom was annexed to the Kingdom of Italy, in 1866.
When a new doge was chosen, before he took the oath of investiture he was presented to the people with the formula "This is your doge, if it please you," preserving the constitutional fiction that the people of Venice ratified the selection. Yet in a real sense the doge was merely the highest servant of the greater community.
During the 20th century, when many artesian wells were sunk into the periphery of the lagoon to draw water for local industry, Venice began to subside. It was realised that extraction of the aquifer was the cause. This sinking process has slowed markedly since artesian wells were banned in the 1960s. However, the city is still threatened by more frequent low-level floods (so-called Acqua alta, "high water") that creep to a height of several centimeters over its quays, regularly following certain tides. In many old houses the ground floor is unoccupied due to the periodic floods, but people continue to live and work in the upper stories.
Venice is famous for its canals. It is built on an archipelago of more than 100 islands in a shallow lagoon. In the old center, the canals serve the function of roads, and every form of transport is on water or on foot. In the 19th century a causeway to the mainland brought a railroad station to Venice, and an automobile causeway and parking lot was added in the 20th century. Beyond these land entrances at the northern edge of the city, transportation within the city remains, as it was in centuries past, entirely on water or on foot. Venice is Europe's largest carfree area, unique in Europe in remaining a sizable functioning city in the 21st century entirely without motorcars or trucks.
The Republic of Venice seized the eastern shores of the Adriatic before 1200, mostly for commercial reasons, because pirates based there were a menace to trade. The Doge already carried the titles Duke of Dalmatia and Duke of Istria. Later mainland possessions, which extended across Lake Garda as far west as the Adda River, were known as "Terrafirma", and were acquired partly as a buffer against beligerent neighbors, partly to guarantee Alpine trade routes, and partly to ensure the supply of mainland wheat, on which the city depended. In building its maritime commercial empire, the Republic acquired control of most of the islands in the Aegean, including Cyprus and Crete, and became a major power-broker in the Near East. By the standards of the time, Venice's stewardship of its mainland territories was relatively enlightened and the citizens of such towns as Bergamo, Brescia, and Verona rallied to the defence of Venetian sovereignty when it was threatened by invaders.
Though Venice was famous for its navy, its army was equally effective. In the 13th century, most Italian city states already were hiring mercenaries, but Venetian troops were still recruited from the lagoon, plus feudal levies from Dalmatia and Istria. In times of emergency, all males between seventeen and sixty years were registered and their weapons were surveyed, with those called to actually fight being organized into companies of twelve. The register of 1338 estimated that 30,000 Venetian men were capable of bearing arms; many of these were skilled crossbowmen. As in other Italian cities, aristocrats and other wealthy men were cavalrymen while the city's conscripts fought as infantry.