By making newsreels and propaganda
By helping with the Voice of America
Many stars toured the country helping to sell War Bonds. Carole Lombard died in a plane crash on one such tour.
War movies were made for morale purposes.
Many actors such as Clark Gable and James Stewart volunteered for the armed services.
Answer:
isolationism means cutting yourself off from the world and trying not get involved in politics or trade, China chose this path maybe because they thought it could help not involve with countries like America. (i said maybe i tried my best)
Explanation: