The cannabis plant has been existence for more than 400 years alreadyStudies have shown that the cannabis plant has been existence for more than 400 years already. There were traces of it discovered in the early civilizations of the Egyptians and the Chinese. Also goes by the name medical marijuana, medical cannabis is a plant which possesses properties that enable it to be used in the medical field. Scientists and doctors have been utilizing it for many years now, and they have attested ...