Which of the following statements best explains the relationship between romanticism and westward expansion?

Romanticism focused so much on nature that American citizens were eager to move to the West and explore the new worlds the romantics wrote about.
Romanticism discouraged westward expansion, instead encouraging people to explore the areas in which they currently lived.
Romanticism expressed the optimism of westward migration and celebrated the great American landscapes.
Romanticism was focused on the landscapes of Europe and largely ignored the landscapes of the West.