What is the most common ancestry of Americans?

Question:

What is the most common ancestry of Americans?

I know there are african-americans, hispanics, people of german, irish, italian, russian, swedish, english, scotish, descent etc. But which kind is found the most in the US? and also more specificaly in the northeast?

Best Answer - Chosen by Asker: I think the most common people are the results of the melting pot.
Different races blended over time through mixed relationships.