Which of the following statements is correct about 'NATO'?

The purpose of NATO was to provide collective defence against the threat of expansion by the Soviet Union and its allies.

The correct answer is Option 3 - The purpose of NATO was to provide collective defence against the threat of expansion by the Soviet Union and its allies.

Option 1- NATO stands for North American Treaty Organization. (INCORRECT)
Option 2- Its original membership included mostly Eastern European nations, the United States, and Cuba. (INCORRECT)
Option 3- The purpose of NATO was to provide collective defence against the threat of expansion by the Soviet Union and its allies. (CORRECT)
Option 4- The NATO formally became inactive on July 1, 1991. (INCORRECT)

NATO, or the North Atlantic Treaty Organization, is a military alliance that was established in April 1949 with the signing of the North Atlantic Treaty. It was headed by the USA. Its original membership included various Western European nations, the United States, and Canada. The purpose of NATO was to provide collective defence against the threat of expansion by the Soviet Union and its allies. There are currently 32 member countries in NATO (North Atlantic Treaty Organization).