Causes of the Great Depression
Second, there are the monetarists, who believe that the Great Depression started as an ordinary recession, but that significant policy mistakes by monetary authorities (especially the Federal Reserve) caused a shrinking of the money supply which greatly exacerbated the economic situation, causing a recession to descend into the Great Depression. Related to this explanation are those who point to debt deflation causing those who borrow to owe ever more in real terms.
Causes of the Great Depression
The Smoot-Hawley Tariff Act was instituted by Senator Reed Smoot and Representative Willis C. Hawley, and signed into law by President Hoover, to raise taxes on American imports by about 20 percent during June 1930. This tax, which added to already shrinking income and overproduction in the U.S., only benefitted Americans in having to spend less on foreign goods. In contrast, European trading nations frowned upon this tax increase, particularly since the "United States was an international creditor and exports to the U.S. market were already declining". In response to the Smoot-Hawley Tariff Act, some of America's primary producers and largest trading partner, Canada, chose to seek retribution by increasing the financial value of imported goods favoured by the Americans.