Answer:
Quarantine.
Explanation:
Mr. President John F. Kennedy in his speech october 22, 1962 announced quarantine against cuba island.
In this speech Mr. President said textually: "I have directed the the following initial steps be taken immediately".
First: To halt this offensive build up, a strict quarantine on all offensive military equipment under shipment to cuba is being initiated.
Answer: Secondary sources are important to study history because these sources provide information written by other authors. Direct information or testimonies from the people who were part of the historical events are called primary resources.
Explanation: