Yes, it is true that North Korea has been actively developing and testing nuclear arms for the last decade, since most of their facilities and tests are easily traceable.
After the World War II, America as a nation stopped
producing gunnery and bombs and resorted in creating peaceful industrial
employments. The American economy have grown that labor force grew from 60
million to 111 million on year 1948 to 1982 and grew from 58 million to 99
million.
The answer is b because the Bishop of Rome as head of the Roman Catholic Church is called a pope