The United States of America
The statements referred by the question are:
a) It convinced the United States to dismantle its nuclear weapons.
b) It proved that a naval blockade was not an act of war.
c) It showed Cuba that communism should be stopped.
d) It brought the world dangerously close to nuclear war.
The correct statement is D. Historians agree the Missile Crisis was the closest the world got to have a nuclear war between the U.S. and USSR. Nothing before or after this came as close to be direct aggression from one of these countries against the other.
Statements A and C never happened: the U.S. has nuclear weapons until today, and Cuba didn't give up on communism.
Statement B doesn't fit the facts around the Missile Crisis. The naval blockade didn't lead to war only because the U.S. was defensive.
Answer:
The Dutch and the Swedes established the first permanent European settlements throughout much of the Middle colonies.
The Middle colonies, like Delaware, New York, and New Jersey, were founded as trade centers, while Pennsylvania was founded as a safe haven for Quakers. The Middle colonies were also called the “Breadbasket colonies” because of their fertile soil, ideal for farming.
I don't know if you typed out your full question but this is about the middle colonies being founded