What was the main issue in the Scopes Trial?

The trial lasted eight days. John Scopes was found guilty but the verdict was overturned on a technicality. The true importance of the trial was not the verdict, however; the Scopes trial increased American awareness and interest in the issue of teaching theology and/or modern science in public schools.

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John Thomas Scopes and commonly referred to as the Scopes Monkey Trial, was an American legal case in July 1925 in which a high school teacher, John T. Scopes, was accused of violating Tennessee's Butler Act, which had made it unlawful to teach human evolution in any state-funded school.

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i would go with the last one