Answer:
Examples of a secondary source are: Publications such as textbooks, magazine articles, book reviews, commentaries, encyclopedias, almanacs.
I think that the answer is D
The labor demands, of war industries caused millions more Americans to move mostly to the Atlantic, Pacific, and Gulf coasts. When World War II ended in 1945, September 2 the United States was in a better economic condition than any other country in the world. 300,000 combat deaths suffered by Americans diminished in comparison to any other major pugnacious. American society became more prosperous in the postwar years than most Americans could have imagined in their wildest dreams before or during the war. The so-called GI Bill of Rights passed in 1944, (due to Public Policy) provided money for veterans to attend college, to purchase homes, and to buy farms. The overall ramifications of such public policies was almost cosmic, but it unequivocally availed returning veterans to better themselves and to begin forming families and having children in exceptional numbers.
The correct answer is B) "Bought grain, stored it, and resold it during times of low harvest":
Following a tendency of nationalizing several industries, which included salt, iron, and liquor, emperor Wu decided to interfere with the trade of grain in 110 BC. This happened as a response from the government to eliminate speculation generated by merchants by selling previously stored grain at below-market prices.