An example of a regional security alliance is the North Atlantic Treaty Organization (NATO).
NATO is an intergovernmental military alliance governed by the North Atlantic Treaty, signed on April 4, 1949. The organization is a collective defense system, in which member states agree to defend any of its members if they are attacked by an external power.
I believe the answer is D. The Jungle is full of pictures and descriptions of the streets and homes during the 60s that were so utterly polluted by society. Hope it helped!
