diaspora
US /daɪˈæs.pɚ.ə/
UK /daɪˈæs.pɚ.ə/

1.
the dispersion of any people from their original homeland
:
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The Jewish diaspora has spread across the globe.
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Many countries have a large African diaspora.
2.
the people who have spread from their original homeland
:
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The Armenian diaspora maintains strong cultural ties.
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The Nigerian diaspora contributes significantly to their home country's economy.