The US government took action against Cuba because Castro aided in an invasion that threatened the security of the Western Hemisphere, particularly during a time of economic progress and social reform. Stevenson highlights that this concern overshadowed other objections to Castro's regime. The primary issue was Castro's actions that jeopardized the collective stability of the Americas. ;
The US government took action against Cuba mainly due to the threat posed by Castro's actions, which were seen as endangering Western security, especially during the Cold War. His alliance with the Soviet Union and support for revolutionary activities further escalated tensions. Therefore, the correct option is C: because Castro took action and supported actions that put the Western world in danger.
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