When surveillance planes revealed the possible installation of soviet nuclear missile sites in cuba, which action did president kennedy take?
he initiated a naval blockade to prevent soviet ships from reaching cuba with nuclear weapons.
he abandoned his plans to form an alliance with cuba.
he threatened the soviets with a nuclear attack from the united states.
he demanded that the united nations send troops to cuba to eliminate soviet missiles.

can someone me with this question:  

1) the end of the conflict between the north and the south didn’t just mark the end of a war; it marked the end of an entire way of life.” which statement best describes what this statement means?  

a) the southerners were no longer free and were controlled by the northern states.

b) the industrial economy in the north was not sustainable.

c) slavery became illegal, which changed completely the south’s labor force and the agricultural economy was destroyed.

d) the states decided to relinquish their independence and return to britain’s rule.    

-he wants to reinforce that students and teachers still have their first amendment rights during the school day.