Answer:
(2) creating the North Atlantic Treaty Organization (NATO)
Explanation:
The North Atlantic Treaty Organization, NATO, also called the Atlantic Alliance, is an intergovernmental military alliance governed by the North Atlantic Treaty or the Washington Treaty, signed on April 4, 1949. The organization constitutes a collective defense system, in which member states agree to defend any of its members if they are attacked by an external power.
In its early years, NATO was not much more than a political association. However, the Korean War led to the establishment of a permanent coalition. Then a military structure was created under the direction of the US commanders. The Cold War led the rival nations to create the Warsaw Pact in 1955.