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  1. The history of the lands that became the United States began with the arrival of the first people in the Americas around 15,000 BC. Numerous indigenous cultures formed, and many saw transformations in the 16th century away from more densely populated lifestyles and towards reorganized polities elsewhere.

  2. The decision of the United States Congress to pass the Marihuana Tax Act of 1937 was based on poorly attended hearings and reports based on questionable studies. [41] [42] In 1936 the Federal Bureau of Narcotics (FBN) noticed an increase of reports of people smoking marijuana, which further increased in 1937.