/ˌænɛkˈseɪʃәn/ – Noun
Definition: 1. việc sáp nhập, việc thôn tính;
2. phần bổ sung, phụ lục, phụ kiện.
A more thorough explanation: Annexation refers to the act of incorporating one territory into another, typically through a formal legal process. This can involve the extension of a country’s sovereignty over a territory that was previously independent or under the control of another state.
Example: The annexation of the disputed territory was a contentious issue between the two countries.