Just Say Yes. Marijuana, scientifically called cannabis sativa, was mentioned in historical manuscripts as early as 2700 B. C. in China. (Grolier Electronic Encyclopedia, 1995). The cultivation of the marijuana plant began as far back as the Jamestown settlers, around 1611, who used hemp produced from the marijuana plant's fibers to make rope and canvas. It was also used in making clothing because of its durability. These uses fit in with the social climate of the time, because …showed first 75 words of 1487 total…

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