[4] The first events that involved the Dalmatian Italians in the unification of Italy were the revolutions of 1848, during which they took part in the constitution of the Republic of San Marco in Venice.
[5] After the Third Italian War of Independence (1866), when the Veneto and Friuli regions were ceded by the Austrians to the newly formed Kingdom Italy, Istria and Dalmatia remained part of the Austro-Hungarian Empire, together with other Italian-speaking areas on the eastern Adriatic.
[7] During the meeting of the Council of Ministers on 12 November 1866, Emperor Franz Joseph I of Austria outlined a wide-ranging project aimed at the Germanization or Slavization of the areas of the empire with an Italian presence:[8] His Majesty expressed the precise order that action be taken decisively against the influence of the Italian elements still present in some regions of the Crown and, appropriately occupying the posts of public, judicial, masters employees as well as with the influence of the press, work in South Tyrol, Dalmatia and Littoral for the Germanization and Slavization of these territories according to the circumstances, with energy and without any regard.
[10][11] Bartoli's evaluation was followed by other claims that Auguste de Marmont, the French Governor General of the Napoleonic Illyrian Provinces commissioned a census in 1809 which found that Dalmatian Italians comprised 29% of the total population of Dalmatia.
They pointed out that according to a report by Imperial court councillor Joseph Fölch in 1827, the Italian language was spoken by noblemen and some citizens of middle and lower classes exclusively in the coastal cities of Zadar, Šibenik and Split.
The political instances of the Dalmatian Italians were promoted to the Autonomist Party, founded in 1878 and dissolved in 1915: a prominent member was Antonio Bajamonti, who from 1860 to 1880 was mayor of Split.
[16][17] In 1889, the foundation of the Dante Alighieri Society, with the aim of protecting and promoting the Italian language, made it possible to give support to the initiatives for the preservation of the Italian-speaking linguistic element.
In this period Roberto Ghiglianovich, as trustee of the company establishes the La Lega in Zadar and promoted the enhancement of Italian culture in the area.
[18] The same year the irredentist Luigi Ziliotto becomes mayor of Zara, a position he would hold until the outbreak of World War I, was accused of treason and declared forfeited by the Austrian authorities.
[19] The policy of collaboration with the local Serbs, inaugurated by Roberto Ghiglianovich and by Giovanni Avoscani, then allowed the Italians to conquer the municipal administration of Dubrovnik in 1899.
In November 1918, after the surrender of Austria-Hungary, Italy occupied militarily Trentino Alto-Adige, the Julian March, Istria, the Kvarner Gulf and Dalmatia, all Austro-Hungarian territories.