Isn't cannabis only native in the Americas? I know they found some in old mummy tombs in Africa. Or maybe that was tobacco. Maybe the ancient trade network was a lot more sophisticated than what is commonly believed.
Different varieties of "Hemp" grow around the world:
http://antiquecannabisbook.com/chap1/History.htmhttp://www.concept420.com/marijuana_cannabis_history_timeline.htm"God said, 'Behold, I have given you every herb bearing seed which is upon the face of all the earth.To you it will be for meat.' And God saw everything that he had made, and, behold, it was very good." (Genesis 1:29-31)
Although "Cannabis" or medicinal Hemp is not mentioned specifically in the Bible, Hemp used for food (the seeds were a staple in eastern Africa) , rope & fishing nets, and clothing is. The medicinal use of Hemp is argued by some to actually have been originally mentioned but lost in translation.
And going slightly off topic but also related to the history of Cannabis : Most people have absolutely no idea that both the Declaration of Independence and The Constitution of the United States of America are both written on Hemp.