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 Recession
According to M.S. Eccles, who was appointed chairman of the Federal Reserve by FDR and held that position until 1948, excessive debt levels were not a source cause of the Great Depression. Increasing debt levels were caused by a concentration of wealth during the 1920s, causing the middle and poorer classes, which saw a relative and/or actual decrease in wealth, to go increasingly into debt in an attempt to maintain or improve their living standards. According to Eccles this concentration of wealth was the source cause of the Great Depression. The ever-increasing debt levels eventually became unpayable, and therefore unsustainable, leading to debt defaults and the financial panics of the 1930s. The concentration of wealth in the modern era parallels that of the 1920s and has had similar effects. Some of the causes of wealth concentration in the modern era are lower tax rates for the rich, such as Warren Buffett paying taxes at a lower rate than the people working for him, policies such as propping up the stock market, which benefit the stock owning rich more than the middle or poorer classes who own little or no stock, and bailouts which funnel tax money collected largely from the middle class to bail out large corporations largely owned by the rich.