75 percent black, 18 percent white, and 6 percent hispanic. Asian and others were less than 1 percent according to this:
http://ascreamingcomesacrossthecourt.wordpress.com/2012/01/02/the-nba-and-ethnicity-the-race-of-each-team/
The answer to this one is quite long and complex There fore I have added a related link (Race and ethnicity in the United States Census) below which will take you to wikipedia where there is a fairly comprehensive answer to this question.
A person whose grandparents were born in Poland would typically choose the "White" racial category on the U.S. Census form, as people of European descent are classified under this category. Additionally, they may specify their ethnic background as "Polish" in the provided options for ethnicity or additional details, but the primary racial classification would be "White."
ethnicity is like your social political background of your ancestors. Where your great grandparents came from is part of your ethnicity. Your culture is also a main part of your ethnicity
Ethnicity of surname amyx
racial origin