What were important themes in american romanticism?

American Romanticism; was a literary movement used basically in all forms of art which were inspired by these sources or important themes; 

1. Nature - It's a man's nature to get fascinated with the beauty of nature. No wonder why the Americans were inspired by this. Based on geographical features, America is undeniably a beautiful country. 

2. Emotions - All writers and film-makers are emotional. And that's a fact. Any piece of art conveyed without emotions are considered a garbage or useless. Nobody would even appreciate it since appreciation starts from our deepest emotions.  As they say, emotions shape our experience and knowledge of the world.

3. Imagination - Einstein believed that "Imagination is better than knowledge". So do Americans. Imagination enables a man to express his individuality and explore the realms of his mind. It makes us see the unknown and perceives the unbelievable. 

4. Democracy - It's an undeniable fact that the Americans founded democracy. The US Constitution itself is built based on this principle. Hollywood movies, books, and music were all inspired by this. 

5. Individualism - Individualism is one of the most important American values that even the presidents of the United States themselves uphold its importance.  Most of the American writers are nonconformists, who do not conform to the prevailing beliefs and ideas of the many but their own. Protestantism, the religion founded by the Americans, certainly explains this value.