One's country of origin—the country where a person was born or raised; often asked in introductions or on forms.
履歴書には出身国と現住所を明記してください。
Please specify your country of origin and current address on the résumé.
彼女の出身国はカナダで、英語が母語だ。
Her country of origin is Canada; English is her native language.
面接で出身国について簡単に説明してもらえますか？
Could you briefly explain your country of origin in the interview?