Was mass production the most important reason for American prosperity?
If it was, you have to support it with events/facts that are in favor of your argument. If not, you have to explain why using contradictory facts/events, like… foreign policy issues (specifics) or technological advancements (industrial revolution, facts that don’t include the idea of mass production). I think it would be easier to write in favor of the idea that mass production as well as other factors were the leading causes of American “prosperity”.
