Italian imperialism under Fascism
Imperialism, colonialism and irredentism played an important role in the foreign policy of Fascist Italy. Among the regime's goals were the acquisition of territory considered historically Italian in France (e.g. Nice) and Yugoslavia (e.g. Dalmatia), the expansion of Italy's sphere of influence into the Balkans (e.g. Greece) and the acquisition of more colonies in Africa. The pacification of Libya (1923–32), the invasion of Ethiopia (1935–36), the invasion of Albania (1939), the invasion of France (1940), the invasion of Greece (1940–41) and the invasion of Yugoslavia (1941) were all undertaken in part to add to Italy's national space.
After his appointment as Governor of the Dodecanese in 1936, the fascist leader Cesare Maria De Vecchi started to promote within Benito Mussolini's National Fascist Party an idea  of a new "Imperial Italy" (Italian: Italia imperiale), one that, like the Roman Empire, went beyond Europe and included northern Africa (the Fourth Shore or "Quarta Sponda" in Italian).
De Vecchi's dream was an Imperial Italy that included not only all the European territories wanted by the Italian irredentists (Nice, Savoy, Ticino, Dalmatia, Corfu, Malta and Corsica) and populated by Italian communities for many centuries, but even the north African territories (Libya and Tunisia), where Italian emigrants had created "colonies" in the late nineteenth century.
After 1936 and during World War II, the Greek Dodecanese islands were also included in the project (with the Ionian islands of Zante, Ithaca, etc.) and the fascist regime soon promoted a process of forced Italianization of these Greek islands.
Italy annexed the coastal provinces of its colony of Libya in 1938 and made them national provinces of Italy that were to be Italianized.
In preparation for war with France in 1940, the Fascist regime intended to gain Corsica, Nice, Savoy, and the colonies of Tunisia and Djibouti from France. Foreign Minister Count Ciano on 10 June 1940 issued support for the partition of Switzerland between Germany and Italy, with Italy annexing Ticino, Grisons, and Valais.
In 1942, with the Italian occupation of Corsica and Tunisia, the territories of the "Imperial Italy" dreamed of by the fascist De Vecchi were fully in Italian hands, with the exception of Malta, but the project was not politically implemented because the war was turning against the Axis powers.
First step: the Dodecanese
De Vecchi effected the first step towards an Italia Imperiale (or Grande Italia) when in 1936, as Italian Governor of the Dodecanese islands, he imposed official use of the Italian language and created a colony of 7,000 Italians in Rhodes and surrounding islands. In 1940 he was appointed to the Grand Council of Fascism where later, during the Italian occupation of Greece, he proposed that the Kingdom of Italy annex the Dodecanese and Ionian islands, with the island of Chios, which had once belonged to the Republic of Genoa.
Second Step: the Fourth Shore
Another fascist leader, Italo Balbo, promoted actively the development of Italian communities in coastal Libya, after the country was pacified from an Arab guerrilla war. Balbo called Tripolitania and Cyrenaica the Quarta Sponda (Fourth Shore) of Italy in reference to the other three shores (the western, the Adriatic and the southern) of the Italian peninsula.
One of the initial Italian objectives in Libya, indeed, had been the relief of overpopulation and unemployment in Italy through emigration to the undeveloped colony. With security established, systematic "demographic colonization" was encouraged by King Victor Emmanuel III's government. A project initiated by Libya's governor, Italo Balbo, brought the first 20,000 settlers — the "Ventimila" - to Libya in a single convoy in October 1938. More settlers followed in 1939, and by 1940 there were approximately 110,000 Italians in Libya, constituting about 12 percent of the total population.
Plans envisioned an Italian colony of 500,000 settlers by the 1960s: so, the Italians would be 2/3 of the population in coastal Libya by then. Libya's best land was allocated to the settlers to be brought under productive cultivation, primarily in olive groves. Settlement was directed by a state corporation, the "Libyan Colonization Society", which undertook land reclamation and the building of model villages and offered a grubstake and credit facilities to the settlers it had sponsored.
Third step: the Western Balkans
General Vittorio Ambrosio, the commander of the Italian Army during the conquest of Yugoslav Dalmatia, created a military line of occupation from Ljubljana to northern Montenegro that successively was to be considered as the future border of the "Imperial Italy" in the North-Western Balkans. Within the borders to the south were included Fascist Montenegro, Greater Albania and Epirus.
De Vecchi promoted the inclusion of Corfu (with a significant community of the Corfiot Italians), the Ionian islands and the southern Aegean islands (once controlled by the Republic of Venice), in order to form an "arch" that stretched toward the Dodecanese, Lesvos and Chios (Once controlled by the Republic of Genoa).
A project that never materialized
In the 1940s, De Vecchi contemplated an "Imperial Italy" stretching from Europe to north Africa, made of the "Imperial Italy" (with an enlarged Italian Empire in eastern Africa, from the Egyptian shores on the Mediterranean to Somalia).
He dreamed of a powerful Italy enlarged:
- 1) in Europe, from Nice to the Governatorato di Dalmazia in Dalmatia and possibly Greater Albania (see map), the Ionian islands, the Principality of Pindus in Epirus (northern Greece), the Dodecanese.
- 2) in northern coastal Africa, from Tunisia to Libya (the Fezzan of Libya was to be considered a colony of the empire).
In a hopeful peace negotiation following an Axis victory, Mussolini had planned to acquire for his Imperial Italy the full island of Crete (that was mostly German occupied) and the surrounding southern Greek islands, connecting the Italian Dodecanese possessions to the already Italian Ionian islands.
The Allied victory in the Second World War ended these projects and terminated all fascist ambitions for the empire.
Finally, in 1947 the Italian Republic formally lost all her overseas colonial possessions as a result of the Treaty of Peace with Italy. There were discussions to maintain Tripolitania (a province of Italian Libya) as the last Italian colony, but they were not successful.
In November 1949, Italian Somaliland was made a United Nations Trust Territory under Italian administration and with capital Mogadishu. This lasted until 1 July 1960, when Italian Somalia was granted its independence along with British Somaliland to form the Somali Republic.
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