Why was it such a big deal when the U. S. discovered missiles in Cuba?

TIA

Explanation:

A crucial moment in the unfolding crisis arrived on October 24, when Soviet ships bound for Cuba neared the line of U.S. vessels enforcing the blockade. An attempt by the Soviets to breach the blockade would likely have sparked a military confrontation that could have quickly escalated to a nuclear exchange.

Frm :-

the common people were given the right to vote. jacksonian popular government was a nineteenth century political reasoning in the united states that upheld more noteworthy vote based system for the basic man as that term was then characterized. starting with president andrew jackson and his supporters, it turned into the country's overwhelming political perspective for an age.

"the royal proclamation of 1763"