Want to know where cannabis is legal in the U.S? Well there is a map for that. Below is a map that highlights what states legalized medical marijuana and for recreational use as well. This map is from 2016 so it has evolved since then but this will give you an idea of where cannabis is legal mainly.
States that legalized Medical Cannabis:
See here for an updated list and the conditions of the legalization.
States that legalized recreational Cannabis use:
Another interesting find is the timeline of cannabis from the past 100 years on Wikipedia. Look how far we’ve come!