African americans and hispanics are highly clustered in by the late 20th century, most of the children and grandchildren of european immigrants had moved from the original inner-city enclaves to a suburban area with a cluster of a particular ethnic population is known as a(n) select one:
a. the north, the suburbs, ethnoburb
b. suburbs, urban areas, suburban ethnic area
c. politically liberal states, suburban, burb
d. single family houses, suburbs, ethnic suburb
e. urban enclaves, the suburbs, ethnoburb

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African Americans and Hispanics are highly clustered in urban enclaves. By the late 20th century, most of the children and grandchildren of European immigrants had moved from the original inner-city enclaves to the suburbs. A suburban area with a cluster of a particular ethnic population is known as an ethnoburb.

Explanation:

The distribution of major U.S. ethnicities among the country may be settled in urban areas. African Americans are the largest racial majority and Hispanics are the largest ethnic majority, better settled in America as time passed by.  

They were clustered in urban areas, especially in inner-city neighborhoods. That is why they are called ethnoburbs, as being suburban ethnic clusters of residential areas in urban areas.

d. japan's attack on pearl harbor

the answer to number 5 is fort sumter