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.
Causes of the Great Depression
Protectionism, such as the American Smoot–Hawley Tariff Act, is often indicated as a cause of the Great Depression, with countries enacting protectionist policies yielding a beggar thy neighbor result. The Smoot–Hawley Tariff Act was especially harmful to agriculture because it caused farmers to default on their loans. This event may have worsened or even caused the ensuing bank runs in the Midwest and West that caused the collapse of the banking system. A petition signed by over 1,000 economists was presented to the U.S. government warning that the Smoot-Hawley Tariff Act would bring disastrous economic repercussions; however, this did not stop the act from being signed into law.