Earlier quoted context omitted.
In what area, did we have zero percent interest rates back in 1930? Interest rates were lower, but with deflation, the real interest rate has been estimated to have been about 7.87% in 1930: http://www.sjsu.edu/faculty/watkins/dep1929.htm
The key thing there isn't the interest rate: it was the deflation rate: 4% in 1930 and a whopping 10% in 1931. The interest rate was more a reflection of the fact that nobody was lending money. The capital markets froze around the world. Deflation is the key to the Great Depression. And why we had deflation was directly a result of the gold standard. Indeed, Europe saw stronger deflation earlier than we did because t…
Agreed, though like you said it is pretty complicated. The US had about 45% of world gold reserve in the early 20's and even though was a net exporter by 1929 had dropped to closer to 37% due in part to large capital lending to Europe.
http://library.intellectualtakeout.org/library/chart-graph/w...
A major issue though was the hoarding of gold by France:
>...While the tightening of U.S. monetary policy in 1928 is often blamed for having initiated the downturn, France increased its share of world gold reserves from 7 percent to 27 percent between 1927 and 1932 and effectively sterilized most of this accumulation. This “gold hoarding” created an artificial shortage of reserves and put other countries under enormous deflationary pressure.
https://www.dartmouth.edu/~dirwin/Did%20France%20Cause%20the...