With a popular African-American presidential candidate and the increasing influence of Hispanic voters, the 2008 presidential election has brought new attention to minority groups in the U.S. Essayist Clarence Page of the Chicago Tribune reflects on how we define race.

Apr 05

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Ethnicity in Nigeria

Despite being home to somewhere between 250 and 400 ethnic groups, Nigeria is primarily made up of four main ethnic groups -- Hausa, Fulani, Igbo and Yoruba -- that comprise about 60 percent of the population.