africans latinos
china
Hispanic
asian alone
genicide is mass murder of a people of specific religion, ethinic group, or race
The Jewish, the gypsies, and the disabled
the hausa are the largest ethinic group in nigeria almost all hausa are muslims
Chinese and African Americans
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I am assuming you mean the United States. The third largest ethnic group in the US is African-American. Although technically not a single ethnic group, African-American is defined as one in the American census. It is preceded by German and Irish.
It is untrue to say that "everyone is a different ethnicity." By definition, an ethinic group is a set of many more than one person who share cultural values, so for each ethnic group there are many people who have that same ethnicity.
He's 100% African American.