contrast is probably the first. the seasons of the tree are shown side by side yet so different. the second is gradation. because the colors are creating a gradient across the image. I can not see the rest.
In the 1950s and 1960s, young Americans had more disposable income and enjoyed greater material comfort than their forebears, which allowed them to devote more time and money to leisure activities and the consumption of popular culture.
Explanation:
Rock and roll, a new style of music that drew inspiration from African American blues music.
