A country needs rules about citizens cause in reality you cant have random people, bad record or not, coming in your country and just being a citizen instantly without any proof of trust, little do they know they could be a terrorist with the rights of a citizen just cause theirs no way to justify who's one or not.
Intermediate-Range Nuclear Treaty
Becase of its location it had the upper hand on war, and material's etc hope this helps
Your answer is "Letter B. Imperialism".
