Why was the placement of missiles in Cuba so urgent for the United States? *
A)The missiles were so close to the U. S., giving the Soviet Union a nuclear advantage
B)Fidel Castro had continuously threatened to attack the U. S. with nuclear missiles.
C)It was a declaration of war by Cuba on the U. S., turning the Cold War into a real war-
D)The missiles had already shot down American U-2 spy planes over Cuba.

Correct answer is A)The missiles were so close to the U.S., giving the Soviet Union a nuclear advantage .

Explanation:

A is the correct answer as the missiles were located less than 100 hundred miles away from United States and presented a real threat for the safety of the country.

B is not correct as the missiles were kept in secret there.

C is not a correct answer as officially war was not declared, although situation was really tense.

D is not correct as this planes were the ones that discovered the existence of nuclear missiles. And, yes a spy plane was shot down.

just finished this it is b. centrifugal force

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.