A timeline of what’s happened since Colorado’s first legal recreational marijuana sales began

It’s been 10 years since Colorado launched the first legal recreational marijuana market in the world and became a pioneer in drug reform.

But when it came to the nascent industry, the first sales on Jan. 1, 2014, were more a starting block than a finish line.

In the decade since legalization, Colorado has refined laws, catalyzed new ones and served as a litmus test for the rest of the country as states followed its lead. Today, cannabis is recreationally available for sale in 24 states — where more than half of Americans live.

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