It's called conquering
It is called annexation when one country takes over another country and incorporates it into its own territory without the consent of the other country.
It's called conquering
It is called an invasion.
When one country takes over the land of another, it is called imperialism. Imperialism involves the extension of a country's power and influence through diplomacy or military force. This can result in the colonization or annexation of territories by the imperial power.
A foreign occupation is when Another Country invades and takes over another county.
to conquer
When a larger country takes over and controls a smaller territory, it is called colonization or imperialism. This often involves political, economic, and social dominance over the colony by the colonizing country.
socialism
that called nationalism meaning there takinng over your land
In the context of the Cold War, yet generally true for any context, the take-over of Another Country (or region belonging to Another Country) is usually called a 'conquest.' Where it is accomplished without fighting, one may refer to it as an 'annexation' or, in certain circumstances, a 'usurpation.' If the land in question is not formally claimed or organized, its take-over may be variously put as a 'claiming,' a 'discovery,' or 'occupation,' among other terms available.
It is called a takeover. If the other company is taken over against its will, it is called a hostile takeover.
In the context of the Cold War, yet generally true for any context, the take-over of Another Country (or region belonging to another country) is usually called a 'conquest.' Where it is accomplished without fighting, one may refer to it as an 'annexation' or, in certain circumstances, a 'usurpation.' If the land in question is not formally claimed or organized, its take-over may be variously put as a 'claiming,' a 'discovery,' or 'occupation,' among other terms available.