Code Switch: Word Watch Each week, we take a look at a word or phrase that's caught our attention, whether for its history, usage, etymology, or just because it has an interesting story. This week, we look into how we came to call cannabis "marijuana," and the role Mexico played in that shift.
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Code Switch: Word Watch

Slave auction in New Orleans, 1842, "Sale of Estates, Pictures and Slaves in the Rotunda, New Orleans." The nation's most active slave market was in New Orleans. Slaves who had been "sold down the river" were auctioned off to plantation owners. Encyclopaedia Britannica/UIG via Getty Images hide caption

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Encyclopaedia Britannica/UIG via Getty Images

The Carlisle Indian Industrial School became a model for dozens of other boarding schools for Native Americans. The government would eventually make attendance compulsory for Native children. Library of Congress hide caption

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Library of Congress

A still from the 1943 film I Walked With A Zombie. RKO/The Kobal Collection hide caption

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RKO/The Kobal Collection

Jazz trumpeter Louis Armstrong signs autographs in the Blue Note nightclub in Chicago in 1948. Edward S. Kitch/AP hide caption

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Edward S. Kitch/AP

Nine out of 10 workers on the transcontinental railroad were Chinese. These indentured laborers, derogatorily called "coolies," became a prime target for criticism in the mid-19th century. Joseph Becker/Library of Congress hide caption

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Joseph Becker/Library of Congress