Great Depression
1929 �� 10 �� 24 �� �� �� �� �� ʷ ��
�� �� �Ρ��� һ �죬�� �� �� �� �� �� �� �� �� �� �� �� ֤ ȯ �� �� �� ��
�� �� Ʊ�� �� �� �� С ʱ �ڣ� һ Щ �� �� �� ҵ �� �� Ʊ �� �� �� �� ��
ֵ �� �� ֽ�� ȫ �� �� �� �� �� �� �� ʼ �� �� Ա�� �� �� 1931 �꣬�� Լ
�� һ ǧ �� �� �� ʧ ҵ �ߡ� �� �� ũ �� �� ���� �� �� �� �� �� �� Բ�� ��
�� �� �ˡ��� 1932 �꣬�� ͳ Herbert Hoover �� ��, Franklin D. Roosevelt
�� �� �� �� ѡ Ϊ �� ͳ �� ѡ �ˣ� �� 1932 �� �� �� ѡ �� ͳ �� �� �� �У�
�� �� �� ŵ �ԣ��� �� �� �� ѡ �� ͳ�� �� �� ʵ �� New Deals.