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.
The thing that caused the Indian removal act was the fact that "In 1828 Andrew Jackson was elected president of the United States, and he immediately declared the removal of eastern tribes a national objective. In 1830 Congress passed the Indian Removal Act, which authorized the president to negotiate removal treaties.Jul 23, 2018
Cherokee Removal | New Georgia Encyclopedia
https://www.georgiaencyclopedia.org/articles/history-archaeology/cherokee-removal "