The NATO (North Atlantic Treaty Organisation) was established on

Correct Answer: April 4, 1949
The NATO (North Atlantic Treaty Organisation) was established on April 4, 1949. The United States and 11 other nations establish the North Atlantic Treaty Organization (NATO), a mutual defense pact aimed at containing possible Soviet aggression against Western Europe. NATO stood as the main U.S.-led military alliance against the Soviet Union throughout the duration of the Cold War.