Pearl Harbor inlet on the southern coast of Oahu, Hawaii, near Honolulu; the site of the United States naval base bombed by Japan on December 7, 1941. Here, the reference to the base denotes the entrance of the United States into World War II.
Prohibition the forbidding by law of the manufacture, transportation, and sale of alcoholic beverages. Here, Finny is referring to the period between 1920 and 1933 when the sale of all alcoholic beverages was forbidden by an amendment of the United States Constitution.
Ruhr river in west central Germany, flowing west into the Rhine; major coal-mining and industrial region centered in the valley of this river. Here, it refers to the industrial region heavily bombed by the Allies in World War II.
