How would a secondary source be beneficial to a historian studying a particularevent?

How did wilhelms character and his statements before the war contribute to france and england seeing him as the supreme leader of germany during the war

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Characteristics of what type of economic system are being described below? 1.economy in which some/all of the basic economic questions answered by central authority 2.trade generally limited to what is produced through the influence of the government a. command economies. b. market economies. c. traditional economies.