Final answer:
Newspapers were the primary medium of information and ideas during the American Revolution, while radio and television served this role during the Vietnam War.
Step-by-step explanation:
In the context of the American Revolution and the Vietnam War, the mediums primarily used to share ideas and information were quite different due to the technological advancements of the respective periods. During the American Revolution, newspapers were the primary medium, helping to inform citizens of British misdeeds and incite revolutionary fervor. By the time of the Vietnam War, however, the mediums had evolved significantly, with radio and television becoming the primary channels through which people received news and political commentary, as evidenced by Walter Cronkite's influential broadcasts.Similarly, during the Vietnam War, newspapers like the New York Times provided coverage from the ground and expressed opinions that influenced public perception of the conflict.