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Vinyl's lower surface noise level than shellac was not forgotten, nor was its durability. In the late 1930s, radio commercials and pre-recorded radio programs being sent to disc jockeys started being stamped in vinyl, so they would not break in the mail. In the mid-1940s, special DJ copies of records started being made of vinyl also, for the same reason. These were all 78 rpm. During and after World War II, when shellac supplies were extremely limited, some 78 rpm records were pressed in vinyl instead of shellac, particularly the six-minute 12-inch (30 cm) 78 rpm records produced by V-Disc for distribution to United States troops in World War II. In the 1940s, radio transcriptions, which were usually on 16-inch records, but sometimes 12-inch, were always made of vinyl, but cut at 33 13 rpm. Shorter transcriptions were often cut at 78 rpm.

What was a factor in shellac availability?
Answer: World War II
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During the Risorgimento, proponents of Italian republicanism and Italian nationalism, such as Alessandro Manzoni, stressed the importance of establishing a uniform national language in order to better create an Italian national identity. With the unification of Italy in the 1860s, standard Italian became the official national language of the new Italian state, while the various unofficial regional languages of Italy gradually became regarded as subordinate "dialects" to Italian, increasingly associated negatively with lack of education or provincialism. However, at the time of the Italian Unification, standard Italian still existed mainly as a literary language, and only 2.5% of Italy's population could speak standard Italian.

In what decade was Italy unified?
Answer: 1860s
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In the following two decades after Sianis' ill will, the Cubs played mostly forgettable baseball, finishing among the worst teams in the National League on an almost annual basis. Longtime infielder/manager Phil Cavarretta, who had been a key player during the '45 season, was fired during spring training in 1954 after admitting the team was unlikely to finish above fifth place. Although shortstop Ernie Banks would become one of the star players in the league during the next decade, finding help for him proved a difficult task, as quality players such as Hank Sauer were few and far between. This, combined with poor ownership decisions such as the College of Coaches, and the ill-fated trade of future Hall of Famer Lou Brock to the Cardinals for pitcher Ernie Broglio (who won only 7 games over the next three seasons), hampered on-field performance.

What season was Phil Cavarretta a key player for the Cubs?
Answer:
the '45 season