USA HISTORY

Detailed explanation-1: -Once the Soviet Union achieved a nuclear capability, U.S. citizens began to prepare for a possible nuclear attack. Among the domestic preparedness measures undertaken by the United States were the construction of fallout shelters and the implementation of air-raid drills in schools and the workplace.

Detailed explanation-2: -The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada.

Detailed explanation-3: -Kennedy, speaking on civil defense, advises American families to build bomb shelters to protect them from atomic fallout in the event of a nuclear exchange with the Soviet Union. Kennedy also assured the public that the U.S. civil defense program would soon begin providing such protection for every American.

Detailed explanation-4: -President Truman authorized the use of the atom bombs in an effort to bring about Japan’s surrender in the Second World War. In the days following the bombings Japan surrendered. The Manhattan Project was the US government program during World War II that developed and built these first atomic bombs.

Detailed explanation-5: -It is commonly buried underground and is made of steel, creating a temporarily live-able environment when it is too dangerous to go outside.