What two developments, c 100-500 ce spurred the development of long-distance trade?
a. the building of large, imperial states and the construction of roads and bridges
b. the end of tribal warfare and the emergence of salvation religions
c. the spread of popular government and the development of navigation technologies
d. the emergence of a common currency and the creation of large city-states

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