History of cannabis
The history of cannabis refers to the history of the genus Cannabis and of its dry herbal tops also called "cannabis." The cultivation of the plant and usage of its dry tops by humans dates back to at least the third millennium BC in written history, and possibly as far back as the Pre-Pottery Neolithic B (8800–6500 BCE) based on archaeological evidence. For millennia, the plant has been valued for its use for fiber and rope, as food and medicine, and for its psychoactive properties for religious and recreational use.