George Washington grew hemp at Mount Vernon as one of his three primary crops. The use of hemp for rope and fabric was ubiquitous throughout the 18th and 19th centuries in the United States. Cannabis was among the first crops purposely cultivated by human beings at least 6,000 years ago, and perhaps more than 12,000 years ago.
Medicinal preparations of cannabis became available in American pharmacies in the 1850s following an introduction to its use in Western medicine by William O'Shaughnessy a decade earlier in 1839.
As the most resourceful crop on earth, cannabis yields industrial hemp for canvas, oil, fiber, and paper among other things; a harmless medicine for gravely ill individuals; and a source of recreation for millions of people around the world.
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