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
Austrian economists argue that the Great Depression was the inevitable outcome of the monetary policies of the Federal Reserve during the 1920s. In their opinion, the central bank's policy was an "easy credit policy" which led to an unsustainable credit-driven boom. In the Austrian view, the inflation of the money supply during this period led to an unsustainable boom in both asset prices (stocks and bonds) and capital goods. By the time the Federal Reserve belatedly tightened monetary policy in 1928, it was too late to avoid a significant economic contraction. Austrians argue that government intervention after the crash of 1929 delayed the market's adjustment and made the road to complete recovery more difficult.