Which style of art/literature/music represented the 19th century European world the most accurately? (Choose from Romanticism, Realism, Impressionism, and Post-Impressionism.)

Impressionism

Explanation:

While I don't know much about arts history (with the exception of music), I do know about impressionism. It was an important shift from romanticism and marked a change in the way which art was made and the subjects. Paintings became literally and figuratively lighter. Many romantic paintings would depict great battles and grand landscapes, while impressionism would focus on more personal views.

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