Which of the following statements about the Great Depression is true? a. Before the Great Depression, the U. S. government did not intervene in the marketplace.
b. John Maynard Keynes believed the U. S. economy would recover from the Great Depression on its own.
c. The government increased imports during the Great Depression to help improve the U. S. economy.
d. The Great Depression was caused by U. S. involvement in World War II.