Answer:
C. North Atlantic Treaty Organization.
Explanation:
North Atlantic Treaty Organization was formed by the Washington Treaty, also known as the North Atlantic Treaty, that was signed on April 5th, 1949. It is a strategic political and military alliance founded by the nations from North America and Europe ( in which United States played an important part) promising collective defense that aim to establish a credible alternative to the forces of the Soviet Union deployed in Central and Eastern Europe after the Second World War.
