While the class difference in responses was not that great, it is still interesting. Why do you think those who identify as lower class and those who identify as upper class were most likely to report...

While the class difference in responses was not that great, it is still interesting. Why do you think those who identify as lower class and those who identify as upper class were most likely to report being very proud to be American? Why do you think those who identified as middle class were least likely to report being very proud?