Nation is the correct answer.
Answer:
The Iron Curtain
Explanation:
Churchill was the first to coin the term "Iron Curtian" in relation to the USSR land holdings in eastern europe, the USSR leaving smaller countries as a buffer zone for an attack on Russia
it is basically people who don't live in a specific place(meaning they move around a lot) that hunt animals for food. if you are referring to people, cave dwellers are people who lived in caves