nationality
US /ˌnæʃ.ənˈæl.ə.t̬i/
UK /ˌnæʃ.ənˈæl.ə.t̬i/

1.
the status of belonging to a particular nation
:
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What is your nationality?
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He holds dual nationality.
2.
an ethnic group forming a part of one or more political nations
:
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The region is home to several distinct nationalities.
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The festival celebrates the diverse nationalities of the city.