What are some ways in which our American culture stratifies people

What are some ways in which our American culture stratifies people? See how long of a list you can come up with. Why do societies stratify? What do you think are the functions of stratification?

How do we in the United States measure social mobility? How does social class and life chance play out in social mobility? Where do you see yourself 10 years from now regarding your place in society? Why?