Answer:
North Atlantic Treaty Organization, is the right answer.
Step-by-step explanation:
- Created in the year 1949 by the U.S., Canada and some other Western European Nations, NATO was an organization to provide collective security against communism or the Soviet Union.
- Following the end of World War II, the European Nations made efforts to restore their economics and ensure their security.
- NATO is a system of collective defense, in which all the member states agree to provide a mutual defense if any of member nation is attacked by any external nation.