1. The aspects of U.S. culture are diffeinitly individualism and ethnocentrism We praise people for their individual achievements,social and economic status. We frown apoun people that do not achieve anything and do not fit into that "norm" category. Most people are just looking out for themselves and will run over anything that gets in the way of their goal.(competitiveness). We may think that we are superior to other societies. because we have a scene of freedom. We can do and say what we want, unless you break the law or someone finds it offensive. We have say in the governing system and have one of the best economic systems.
2. I'm not quit sure about what is being asked What I get from the question is what best explains U.S. culture. In my opinion it would be materialism. We are consumer society looking for the bigger, faster and better things. We are judged by the cloths you wear, the car you drive and the material potations you own.