During the fall of the Serbian Empire (14th century), Shkodër was taken by the Balšić family of Zeta who surrendered the city to Venice, in order to form protection zone from the Ottoman Empire. During Venetian rule the city adopted the Statutes of Scutari, a civic law written in Venetian, which also contained Albanian elements such as "Besa" and "Gjakmarrja". Principality of Zeta, a former Ottoman vassal, lost its status as an independent state and was largely incorporated into the Sanjak of Scutari in 1499. In 1514, this territory was separated from the Sanjak of Scutari and established as a separate sanjak, under the rule of Skenderbeg Crnojević. When he died in 1528, the Sanjak of Montenegro was reincorporated into the Sanjak of Scutari as a unique administrative unit (vilayet) with certain degree of autonomy. The first Ottoman censuses (1431, 1467 and 1485) show such substantial presence of Slavic toponyms.