Where are you there in 1900, what do you mean it wasn’t slang ,where does the word come from what does it mean? You’re missing the whole point, cannabis has nothing to do with Mexico ....not before the 1800s. It would be appropriate to use the word ganja that’s the Indian word cannabis does not belong to Mexico it should not have a Mexican word associated with it woul be like calling pizza “tomato pie” in Italy.