What prompted the Cuban Missile Crisis?

https://history.state.gov/milestones/1961-1968/cuban-missile-crisis

Explanation:

This might help.

The Cuban Missile Crisis occurred in 1962 when the Soviet Union began to install nuclear missiles in Cuba. The United States refused to allow this and, after thirteen tense days and many secret negotiations, the Soviet Union agreed to remove the missiles.

answer; taking up arms to defend the nation;

a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”