Did you know at one time the government mandated that every farmer grow hemp in the United States? That’s just one gem in the historical treasure trove of U.S. marijuana policy. Marijuana laws in America have morphed a lot over the past few hundred years — and some of the key turning points might surprise you.

1600s to 2016: Check out the fascinating history of marijuana laws in the United States.

1619-1890s: Domestic hemp production mandate
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Photo credit links: (Marihuana Tax Act: U.S. Bureau of Engraving and Printing/ Wikimedia), (NORML: Ruby and Luan/Flickr), (DEA Special Agent badge: Drug Enforcement Administration/Wikimedia)