The Great Depression (20 out 1929 ano – 27 jul 1939 ano)
Descrição:
 Longest period of economic recession in history.  As high as 25% unemployment. 
Note: End date for Great Depression is only accurate up to the year (not including month and day) 
Adicionado na linha do tempo:
Data:
20 out 1929 ano
27 jul 1939 ano
 ~ 9 years and 9 months