Final answer:
The principle of the Declaration of Independence that had the most influence on the French Revolution was the idea of natural rights and the belief in inalienable rights. This principle was inspired by John Locke and was also reflected in the Declaration of the Rights of Man and of the Citizen.
Step-by-step explanation:
The principle of the Declaration of Independence that had the most influence on the French Revolution was the idea of natural rights and the belief that all individuals are entitled to certain inalienable rights. This principle, articulated by Thomas Jefferson in the Declaration of Independence, was inspired by the Enlightenment philosopher John Locke. The French Revolution was also influenced by the Enlightenment ideals of liberty, equality, and justice, which were reflected in the Declaration of the Rights of Man and of the Citizen.