Sunlight. Orchids require just the right amount of sunlight in order to grow successfully. If provided too little sunlight, the plant will fail to blossom; if provided too much sunlight, the blossoms will fade and the foliage will burn.
Nine thousand banks failed during the months following the stock market crash of 1929. It is far too simplistic to view the stock market crash as the single cause of the Great Depression. A healthy economy can recover from such a contraction. Long-term underlying causes sent the nation into a downward spiral of despair.
Essentially, the Great Depression, in their view, was caused by the fall of the money supply. Friedman and Schwartz write: From the cyclical peak in August 1929 to a cyclical trough in March 1933, the stock of money fell by over a third..