What was the Roman method for spanning great distances when building aquaducts?

Which term describes the soviet policy the expanded freedom of the press and allowed criticism of the communist party during the cold wara: containment b: perestroikac: detente d: glasnost

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

Which statement about submarine use in world war i is true? the allies never found a way to counter german submarine warfare. germany’s use of submarines affected the united states’ decision to enter the war. only the germans used submarines in world war i.