Italian colonists in the Dodecanese the Leros town of Lakki (founded by the Italians as "Portolago"), which remains a prime example of Italian Rationalism. From 1923 to 1936, governor Mario Lago was able to integrate the Greek, Turkish and Ladino Jewish communities of the island of Rhodes with the Italian colonists. Lago's term of office constituted what might in retrospective be called the "Golden Period" of the Italian Dodecanese, with the economy booming and a relatively harmonious society. In the 1936 Italian census of the Dodecanese islands, the total population was 129,135, of which 7,015 were Italians. Nearly 80% of the Italian colonists lived in
Dodecanese territories, occupied all the present-day Dodecanese except for Kastellorizo. After the end of the war according to the Treaty of Ouchy, Italy maintained the occupation of the islands as guarantee for the execution of the treaty. The occupation continued after Italy declared war on the Ottoman Empire (21 August 1915) during the First World War. During the war, the islands became an important naval base for Britain and France; Italy was allied with both nations during World War I. The Dodecanese were used as a staging area for numerous campaigns, most famously the one at Gallipoli. Some of the smaller