/ˈsɪŋɡəl ˈsɪtɪzənʃɪp/ – Phrase
Definition: 1. quốc tịch duy nhất;
2. quốc tịch đơn, một quốc tịch.
A more thorough explanation: Single citizenship refers to a legal status in which an individual holds citizenship in only one country and is subject to the rights and responsibilities associated with that citizenship. This means that the individual is not a citizen of multiple countries simultaneously.
Example: In this country, dual citizenship is not allowed, and individuals must hold only a single citizenship.