Long Depression
In the United States, the Long Depression began with the Panic of 1873. The National Bureau of Economic Research dates the contraction following the panic as lasting from October 1873 to March 1879. At 65 months, it is the longest-lasting contraction identified by the NBER, eclipsing the Great Depression's 43 months of contraction. Figures from Milton Friedman and Anna Schwartz show net national product increased 3 percent per year from 1869 to 1879 and real national product grew at 6.8 percent per year during that time frame. However, since between 1869 and 1879 the population of the United States increased by over 17.5 percent, per capita NNP growth was lower. Following the end of the episode in 1879, the U.S. economy would remain unstable, experiencing recessions for 114 of the 253 months until January 1901.
Wall Street Crash of 1929
The 1929 crash brought the Roaring Twenties to a halt. As tentatively expressed by economic historian Charles P. Kindleberger, in 1929, there was no lender of last resort effectively present, which, if it had existed and been properly exercised, would have been key in shortening the business slowdown that normally follows financial crises. The crash instigated widespread and long-lasting consequences for the United States. Historians still debate whether or not the 1929 crash sparked the Great Depression or if it merely coincided with the bursting of a loose credit-inspired economic bubble. Only 16% of American households were invested in the stock market within the United States during the period leading up to this depression, suggesting that the crash carried somewhat less of a weight in causing it.
However, the psychological effects of the crash reverberated across the nation as businesses became aware of the difficulties in securing capital market investments for new projects and expansions. Business uncertainty naturally affects job security for employees, and as the American worker (the consumer) faced uncertainty with regards to income, naturally the propensity to consume declined. The decline in stock prices caused bankruptcies and severe macroeconomic difficulties, including contraction of credit, business closures, firing of workers, bank failures, decline of the money supply, and other economically depressing events.