Is their any culture, at any time, that didn't take their land by force?
The only group I can think of might be far northern Eskimos etc.
There is a strain out there of peoples that want to misuse history for nationalistic reasons.
The only group I can think of might be far northern Eskimos etc.
Some suggestions - Armenians, Kurds, Chinese, Basques, Egyptians, Berbers, Arabs in Arabia, Dravidic Indians, Australian Aborgines, Amerinds, Bushmen, Ethiopians, Picts, etc.
Then there are the cultures whose origin in their current land is probably not native, but whose arrival is lost in the mists of antiquity with no known record of violent conquest - Scandanaivans, Russians, Germans, Greeks, Ibero-Celts, Siberian Turks, Tibetans.
Finally, there are those who occupied vacated territories relatively peacefully following wars and migrations of other people, such as the Hungarians, Bulgarians, Poles, Czechs.