In September of 1937, hemp became illegal. The most useful crop known became a drug and our planet has been suffering ever since.
Between 1850 and 1937 marijuana was widely used throughout United States as a medicinal drug and could easily be purchased in pharmacies and general stores. Recreational use was limited in the US until after the Mexican Revolution of 1910, when an influx of Mexican immigrants introduced the habit.
Abraham Lincoln was an avowed enemy of prohibition. His wife was prescribed cannabis for her nerves after his assassination. Virtually every president from the mid-19th Century up until prohibition routinely used cannabis medicines.
Here is a link to the historic legacy of Cannabis..
Its fascinating:
http://forums.cannabisculture.com/forums/ubbthreads.php?ubb=showflat&Number=1709037Post1709037