Which of the following describes an advantage that secondary sources have over primary sources for historians?
a. they can offer historians a firsthand interpretation of an important event.
b. they can provide a general summary of evidence other historians have discovered.
c. they can act as hard evidence to prove whether a society used a particular tool.
d. they can reveal to a historian exactly how people of an ancient culture lived.

Which of the following arguments decided the debate over using the atomic bomb against japan in 1945? using the bomb would destroy the armaments still available to japanese forces in japan. using the bomb would demonstrate the power of the united states to the entire world. using the bomb would shorten the war and avoid heavy casualties among invading troops. using the bomb would enable allied forces to invade and take over the japanese mainland