What was thomas jeffersons most important contribution to american revolutionary efforts

Jefferson was the primary author of the Declaration of Independence

Thomas Jefferson´s most important contribution to American revolutionary efforts wa the drafting of the Declaration of Independence, (perhaps the most important of all the documents of the history of the United States), through which the Colonies considered themselves free from the English rule.

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )