What was the Cuban Missile Crisis and why did it affect nations other then the US and USSR?

During the Cuban Missile Crisis, leaders of the U.S. and the Soviet Union engaged in a tense, 13-day political and military standoff in October 1962 over the installation of nuclear-armed Soviet missiles on Cuba, just 90 miles from U.S. shores.

Explanation:

During the crisis, the United States raised its nuclear war footing to the highest level it has ever been (DEFCON 2), one step below “nuclear war is imminent.” U.S. nuclear-armed bombers were placed on airborne alert, and some of the Soviet missiles and bombers in Cuba were not under the direct control of senior.

the constitution of the united states gave congress the absolute authority over immigration laws

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.