What are the five reasons jhom green thinks the great depression started?

J. John Green identifies five key reasons for the onset of the Great Depression: the Stock Market crash of 1929, which eroded consumer confidence; bank failures that led to a loss of savings and further reduced spending; a decline in international trade due to protectionist tariffs; overproduction in key industries that created excess supply; and poor monetary policy decisions that failed to stabilize the economy. These factors collectively contributed to a severe economic downturn and widespread unemployment.