Answer:
The correct answer is A. The fact that communism was spreading and threatening government stability began to shape the debate over foreign policy in the 1960s. This situation led to the development of the domino theory and the adoption of the Johnson Doctrine as the main foreign policy rule in the United States.
The doctrine meant that the United States of America appropriated the right to carry out armed intervention in the internal affairs of the states of the Western Hemisphere (and subsequently of any countries in the Asia-Pacific region) to protect the interests of its citizens. The doctrine was aimed at preventing the coming to power of communist or socialist parties (even if their coming was done in a democratic way and with the support of the majority of the population of a sovereign country).
وينبني هيتبرع هينيز نقترب عبر عينك حضنك مثمن نينوي نحصى كينير نبوح —
The age of the universe, the identity of quasars, and the existence of dark energy.
