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Mexico congress approves bill to legalize marijuana.
Photo credit: PetrohsW – Own work, CC BY-SA 4.0, link.
House passes bill to decriminalize marijuana.
Photo credit: Bijaya2043 – Own work, CC BY-SA 4.0, link.
UN removes marijuana from most dangerous drugs list.
Photo credit: Chuck Grimmett from Amherst, Ohio, United States of America – Smoking, CC BY-SA 2.0, link.
Marijuana legalized in Arizona, Montana, New Jersey and South Dakota.
Photo credit: Daniel Oberhaus – Own work, CC BY-SA 4.0, link.
Illinois legalizes recreational marijuana.