What does NATO stand for?

NATO stands for North Atlantic Treaty Organization. This organization was established in 1949 as a military alliance among countries in North America and Europe. Its primary purpose is to ensure collective defense in response to aggression against any member state, reinforcing mutual support and interdependence during the Cold War and beyond. The name accurately reflects both its geographical reach (North Atlantic) and the foundational agreement (Treaty) among its member nations.

The other options do not accurately represent the organization. National Alliance for Treaty Order, for example, does not align with the historical context or purpose of NATO, while North American Trade Organization focuses on economic factors and is not relevant to NATO's military alliance framework. Lastly, National Allied Troop Order does not connect to the formal structure or mission of NATO, further affirming that the chosen answer is the most accurate.