Italianization (Italian: Italianizzazione; Croatian: potalijančavanje; Slovene: poitaljančevanje; German: Italianisierung) was a process organized by the Kingdom of Italy to force cultural and ethnic assimilation of the native minority populations living in the former Austro-Hungarian territories that were given to Italy in exchange for their joining an alliance with the United Kingdom in World War I. This process was conducted during the Fascism, between 1922 and 1943.
Regions and populations affected 
Between 1922 and the beginning of World War II, the affected people were the German-speaking population of Trentino-Alto Adige, and the Slovenes and Croats in the Julian March. The program was later extended to areas annexed during World War II, affecting Slovenes in the Province of Ljubljana, and Croats in Gorski Kotar and coastal Dalmatia.
Istria and Julian March 
During the period of occupation (between the years 1918 and 1920), 400 cultural, sporting (for example Sokol), youth, social and professional Slavic organisations, and libraries ("reading rooms"), three political parties, 31 newspapers and journals, and 300 co-operatives and financial institutions had been forbidden, and specifically so later with the Law on Associations (1925), the Law on Public Demonstrations (1926) and the Law on Public Order (1926), the closure of the classical lyceum in Pazin, of the high school in Voloska (1918), the closure of the 488 Slovene and Croat primary schools followed.
On 13 July 1920, in retaliation for the insurgency in Split, the Blackshirts burned down the National Hall in Trieste, the cultural and economic centre of Slovene inhabitants of the city. Benito Mussolini praised this action as a "masterpiece of the Triestine fascism"; in two years he would become prime minister of Italy. The destruction was part of more extensive violence against the Slovenes and other Slavs in Trieste; it foreshadowed ensuing violence against the Slovenes and Croats in the Julian March.
In September 1920, Mussolini said:
When dealing with such a race as Slavic - inferior and barbarian - we must not pursue the carrot, but the stick policy. We should not be afraid of new victims. The Italian border should run across the Brenner Pass, Monte Nevoso and the Dinaric Alps. I would say we can easily sacrifice 500,000 barbaric Slavs for 50,000 Italians.
This expressed a common Fascist opinion against the Slovene minority in Italy (1920-1947) and Croatian population of the Julian March. Neither the Treaty of Rapallo (1920) nor the Treaty of Rome (1924) provided for rights or protections of minorities in the allocation of control over lands of the former Austro-Hungarian empire. The Italians systematically Italianized former Croat, Slovene, and German toponyms of places in the territory they took over.
Italian teachers were assigned to schools and the use of Croat and Slovene languages in the administration and in the courts restricted. After March 1923 these languages were prohibited in administration, and after October 1925 in law courts, as well. On 1 October 1923 the fascist minister Giovanni Gentile announced "scholastic reform": he forbade use of Slovene and Croat languages in the schools.
In 1926, claiming that it was restoring surnames to their original Italian form, the Italian government announced the Italianization of German, Slovene and Croat surnames. In the Province of Trieste alone, 3.000 surnames were 'modified' and 60.000 people had their surnames 'amended' to an Italian-sounding form. First or given names were also Italianized.
Slovene and Croat societies and sporting and cultural associations had to cease every activity in line with a decision of provincial fascist secretaries dated 12 June 1927. On a specific order from the prefect of Trieste on 19 November 1928, the Edinost political society was also dissolved. Croat and Slovene financial co-operatives in Istria, which at first were absorbed by the Pula or Trieste savings banks, were gradually liquidated.
In 1927, Giuseppe Cobolli Gigli, the minister for public works in fascist Italy, wrote in Gerarchia magazine, a Fascist publication, that "The Istrian muse named as Foibe those places suitable for burial of enemies of the national [Italian] characteristics of Istria".
The Slovene militant anti-Fascist organization TIGR emerged in 1927. It co-ordinated the Slovene resistance against Fascist Italy until its dismantlement by the Fascist secret police in 1941. At the time, some TIGR ex-members joined the Slovene Partisans.
South Tyrol 
In 1919, at the time of its annexation, the southern part of Tyrol was inhabited by almost 90% German speakers. In October 1923, the "use of the Italian language became mandatory on all levels of federal, provincial and local government". Regulations by the fascist authorities required that all kinds of signs and public notices had to be in Italian only, while maps, postcards and other graphic material had to show Italian place names. In September 1925, Italian became the sole permissible language in courts of law, meaning that cases could be heard from then on only in Italian. Illegal Katakombenschulen ("Catacomb schools") were set up by the local German-speaking minority to teach children the German language. The government created incentives to encourage immigration of native Italians to the South Tyrol.
Several factors limited the effects of the Italian policy, namely the adverse nature of the territory (mainly mountains and valleys of difficult access), the difficulty for the Italians from southern Italy to adapt to a completely different environment and, later on, the alliance Germany and Italy. Under the 1939 South Tyrol Option Agreement, Adolf Hitler and Benito Mussolini determined the status of the German people living in the province. They could emigrate to Germany or stay in Italy. Because of the outbreak of World War II, this agreement was never fully implemented and most ethnic Germans remained or returned at the end of the war.
World War II 
During World War II, Italy occupied almost all of Dalmatia, and the Italian government made stringent efforts to Italianize the region. They forbade residents to listen to any radio station in Croat or Slovene, at the risk of being identified as "an enemy of the state" and executed. Yugoslavs were not allowed to buy land or property, and drastic measures were enacted to ensure that. The program was implemented by Italo Sauro, son of Nazario Sauro and personal counselor to Mussolini for Italianization.
Italian occupying forces were accused of committing war crimes in order to transform occupied territories into ethnic Italian territories.
The Italian government operated many concentration camps for Slavic citizens, such as Rab concentration camp and one on the island of Molat. Survivors received no compensation from Italy after the war.
Mario Roatta was the commander of the 2nd Italian Army in Yugoslavia. To suppress the mounting resistance led by the Slovene partisans, he adopted tactics of "summary executions, hostage-taking, reprisals, internments and the burning of houses and villages." After the war the Yugoslav government sought unsuccessfully to have him extradited for war crimes from Spain, where he was protected by Francisco Franco. He was quoted as saying "Non dente per dente, ma testa per dente" (Not a tooth for tooth but a head for a tooth). In 1942 General Mario Robotti, Commander of the Italian 11th division in Slovenia and Croatia was quoted as saying, "Si ammazza troppo poco" (There are not enough killings).  Mario Robotti issued an order in line with a directive received from Mussolini in June 1942: "I would not be opposed to all (sic) Slovenes being imprisoned and replaced by Italians. In other words, we should take steps to ensure that political and ethnic frontiers coincide."
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