Answer:
D. North Atlantic Treaty Organization
Explanation:
NATO, or North Atlantic Treaty Organization, is an organization formed in 1949 by 12 European and North American nations founding members to protect and defend themselves from other parties attacks, since its founding in 1949 to this day the number of nations has risen up to 29 countries. They have their headquarters located in Belgium, Brussels. They have an additional 21 countries as part of the NATO´s peace program. And their combined spending in arms and defence are the 70% of the worlds total.
