Answer:
The Roman ruler that ushered an era of peace is A. Augustus
Explanation:
Roosevelt won the 1944 election, and Truman took office as vice president in January 1945. He played a minor role as Vice President and was not told about the atomic bomb until he became president.
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I could be wrong, but I am pretty sure that the answer is: D, pollution.
To start the us policy of containment was made because of the fear of communism spreading. An example of containment is when Russia sent nuclear missiles to cuba which in turn created the Cuban missile crisis, the us then set up a "quarantine" around northern cuba to protect the us. Russia later took the missiles back and tensions fell. Another example is the situation in Berlin, West Berlin was communist, East Berlin was democratic, the communist vision eventually fell with the Berlin wall which promoted democracy. The us also gave billons of dollars to Europe to promote democratic growth. The quarantine is basically against communism and promoting a democratic style.
The Middle Ages are called the dark ages because it was a dark time for people living in poverty