 Complete the following phrase:  In 1919, Conte di Cavour sailed to North America and visited ports in the United States as well as Halifax, Canada. Giulio Cesare made port visits in the Levant in 1919 and 1920. Conte di Cavour was mostly inactive in 1921 because of personnel shortages and was refitted at La Spezia from November to March 1922. Both battleships supported Italian operations on Corfu in 1923 after an Italian general and his staff 