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.
On Black Tuesday, October 29, 1929, the stock market crashed, triggering the Great Depression, the worst economic collapse in the history of the modern industrial world. It spread from the United States to the rest of the world, lasting from the end of 1929 until the early 1940s.