territorial expansion

Translations
территориальное расширение
The empire's territorial expansion was unprecedented.
Территориальное расширение империи было беспрецедентным.
Definitions
Territorial expansion refers to the process by which a state or nation increases its land area, often through the acquisition of new territories, colonization, or military conquest. This can involve annexation, treaties, or other means of gaining control over additional geographic regions.
Words
territorial

adjective
территориальный
expansion

noun
расширение