Which of the following was a circumstance that led to the Great Depression?
Options:
A. France and Great Britain were unable to repay the loans American banks had extended to them during the war.
B. Incomes stagnated throughout the 1920s, and many Americans were in debt.
C. Immigrants had arrived in large numbers during the previous decade and taken many low-paying jobs, leaving many Americans unemployed.
D. Credit was difficult to come by in the 1920s, so few Americans could purchase property or consumer goods.