Long ago, a city called Venice had many lands. 
Long ago, Venice was a city by the sea. 

The Stato da Mar was a sea empire. 
Venice began to grow around the year 1000. A leader named Pietro II Orseolo won a fight. This helped Venice gain control of new areas. Later, Venice gained many islands. These islands were very important for trade. They helped Venice lead in the sea. They held islands like Crete and Cyprus. 
For many years, Venice fought with the Ottoman Empire. These were long wars over land. Venice lost some places during these wars. But they also won new lands back. One famous place they held was the Peloponnese. After many changes, the empire ended in 1797. This happened when Napoleon I took over. The empire was a big part of sea history.
The Stato da Mar was a massive sea empire. 
Venice controlled these lands in a few different ways. The empire was one of three parts of Venice. The first part was the city of Venice itself. The second part was the Domini di Terraferma in northern Italy. The third part was the Stato da Mar. 
This empire grew slowly over hundreds of years. It started around the year 1000. A leader named Doge Pietro II Orseolo defeated the Narentines. This allowed him to call himself the "Duke of Dalmatia." 
Many specific places were part of this huge empire. 
Later history was filled with many hard jobs and wars.
The Stato da Mar was a vast maritime empire controlled by the Republic of Venice. 
This empire operated through a network of strategic islands and coastal ports. These locations allowed Venice to control vital sea routes and trade. The territories spanned several modern-day regions. They included parts of Italy, Slovenia, Croatia, Montenegro, Albania, and Greece. Specific islands like Crete, Cyprus, and the Ionian Islands were central to this system. 
The growth of the Stato da Mar occurred in distinct historical stages. The first stage began around the year 1000. Doge Pietro II Orseolo defeated the Narentines during this time. This victory led Dalmatian city-states to recognize Venetian rule. Consequently, the Doge began calling himself the "Duke of Dalmatia." 
Venice continued to expand through diplomacy and conflict in the later Middle Ages. After the War of Chioggia in the late 14th century, the empire grew rapidly. In 1386, the island of Corfu came under permanent Venetian rule. Between 1392 and 1397, Venice acquired several ports on the Albanian coast, including Durazzo and Scutari. In 1409, Venice used wealth to secure more land in Dalmatia. They paid 100,000 ducats to Ladislaus of Naples for several domains. These included the islands of Cres, Rab, and Pag, as well as the city of Zadar. 
From the 15th century onward, the empire faced intense pressure from the Ottoman Empire. This era was defined by successive Ottoman–Venetian wars. 
The empire eventually shrank to a much smaller size. By the final years of the Republic, Venetian holdings were limited. They held territory only in Istria, Dalmatia, and the Ionian Islands. No Venetian lands remained east of the islands of Kythira and Antikythera. The entire Stato da Mar came to an end in 1797. This happened when Napoleon I caused the fall of the Republic of Venice. This marked the conclusion of a maritime presence that had shaped the Mediterranean for hundreds of years.
The legacy of the Stato da Mar is tied to the history of Mediterranean trade and geopolitics. The empire's structure helped Venice become a global commercial power. The control of specific ports like those in Apulia or the Greek islands allowed for the movement of goods. 
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