Explain how the theme of psychology has influenced 20th century art

Please choose any two of the following.

Romanticism vs realism – define each and compare/contrast one example of each

1. Define Impressionism and describe two specific examples
2. Explain how the theme of war has influenced 20th century art – use two examples
3. Explain how the theme of psychology has influenced 20th century art – two examples
4. Choose one of the following artists and explain how they have contributed to art history with innovations: Picasso, Van Gogh, Dali (suggested 2-3 examples)