This campaign was conducted by means of personal interviews with the representatives of the principal Powers, and particularly with those of the United States because it was apparently felt that the chief opposition to the demand would come from that quarter, since the President was known to favor the general proposition that every nation should have free access to the sea and, if possible, a seaport under its own sovereignty.
The Italian delegates were undoubtedly encouraged by some Americans to believe that, while the President had not actually declared in favor of Italian control of Fiume, he was sympathetic to the idea and would ultimately assent to it just as he had in the case of the cession to Italy of the Tyrol with its Austrian population.

Convinced by these assurances of success the Italian leaders began a nationwide propaganda at home for the purpose of arousing a strong public sentiment for the acquisition of the port.

This propaganda was begun, it would seem, for two reasons, first, the political advantage to be gained when it was announced that Signor Orlando and his colleagues at Paris had succeeded in having their demand recognized, and, second, the possibility of influencing the President to a speedy decision by exhibiting the intensity and unity of the Italian national spirit in demanding the annexation of the little city, the major part of the population of which was asserted to be of Italian blood.
The idea, which was industriously circulated throughout Italy, that Fiume was an Italian city, aroused the feelings of the people more than any political or economic argument could have done.

The fact that the suburbs, which were really as much a part of the municipality as the area within the city proper, were inhabited largely by Jugo-Slavs was ignored, ridiculed, or denied.

That the Jugo-Slavs undoubtedly exceeded in numbers the Italians in the community when it was treated as a whole made no difference to the propagandists who asserted that Fiume was Italian.