noun
BAD : My name is Iman Jalil and my nationality is Iraqi.
GOOD : My name is Iman Jalil and I come from Iraq.
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The usual way of referring to someone's nationality is to use come from : 'Most of the students in my class come from Oman or Bahrain.'
Nationality is used mainly in formal styles: 'Visitors of Swedish nationality do not require a visa.' 'Despite being born in Germany, these children do not have an automatic right to German nationality.'