where did tobacco come from in the columbian exchange (Chapter 5) A Brief History of Tobacco

Technically, any amount of tobacco mixed with cannabis can be considered a spliff

When I questioned in 1986 why this monitoring had been stopped, I was advised government policy was that all cigarette smoking was very dangerous, regardless of the levels of additives and pesticide residue they contained

The answer lies in the ingredients: Native cigarettes are often positioned as simpler, additive-free products, while commercial cigarettes from big tobacco companies typically include a long list of chemicals designed to enhance flavour, extend shelf life, and intensify nicotine delivery

You get the idea Wrapper Color Its often believed that you can tell a cigars strength from its color

Bibcode:1978EEApp..23..139B