What is the name of the american literary movement that was most active in the 1830s and 1840s?

It was Modernism.
they rejected the enlightenment philosophy and also religious beliefs. 
it was a thinking that the art, religion, science, architecture and literature were ill-fitted for their task and outdated for their new economic, social and cultural environments.

^^^ i agree with the person above me, good luck on whatever : )

Attach a picture of the question