Where Is Marijuana Legal?

Marijuana has been used for thousands of years, primarily for treating medical conditions. It was used in ancient China as an anesthetic. It was one of five herbs taken to help relieve anxiety during India’s Iron Age. Cannabis seeds have been found in Viking ships, possibly for use in alleviating pain.

And for most of human history, marijuana use was legal. That began to change in the early 20th century, though. Between 1916 and 1931, 29 U.S. states banned the use of marijuana. The Marihuana Tax Act of 1937 essentially made cannabis illegal across the U.S. Many other countries outlawed marijuana during the first half of the century, with more nations added to the list in subsequent decades.

But the tide is turning. Several countries and many U.S. states have legalized the use and sale of medical marijuana. A couple of countries and a growing number of U.S. states allow the use

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