One action napoleon took that showed he supported some enlightenment ideals was to

Build schools and universities accessible to the middle class.

Explanation:

This is one of the measures that Napoleon took which showed that he supported Enlightenment ideals. The Enlightenment was a period of transformation in philosophy, in which ideals of equality, freedom and justice became extremely popular. Philosophers at the time believed reason to be the most important quality of humans, as well as the main path by which people could achieve their full potential. The establishment of schools was seen as a way to encourage all citizens to use and develop their ability to reason.

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