The best option from the list would be that "<span>b. The United States began to build up its military and to stockpile weapons," since this was part of the inevitable "Arms Race" that took place between the US and the USSR. </span>
Answer:
Puberty refers to the bodily changes.
Adolescence is the period of psychological and social transition between childhood and adulthood.
John Adams was the Second President of the United States of America.
<span>The Iron Curtain divided Europe into two halves, east and west. The western democratic countries were on the side of the United States. The eastern communist countries were on the side of the Soviet Union. The Iron Curtain fell when communism collapsed and the eastern European countries became democratic.</span>