2. Which statement explains this man's extraordinary popularity during the 1920s?
 A. His creation of a successful transportation company coincided with the early years of mass
 immigration
 B. His notable diplomatic achievement played an important role in ending an international
 conflict.
 CHis support of a future president played an important role in ending an economic depression.
 D. His notable technological achievement coincided with the early years of mass media.
 CE