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A County-by-County Map of America's Ethnic Roots

The Washington Post has come out with a map that shows the dominant racial ancestry in the United States' 3144 counties. Some results are not surprising: Did you know that there are a lot of Irish people in Boston? It's not a surprise to see African Americans dominate the South and Mexicans dominate the border… » 4/18/14 4:00pm 4/18/14 4:00pm