The Enlightenment had a profound influence on the principles of the United States Constitution. Enlightenment thinkers such as John Locke, Montesquieu, and Rousseau emphasized ideas like individual liberty, the social contract, and the separation of powers. These concepts informed the framers of the Constitution, who sought to establish a government that protected citizens' rights while preventing tyranny. The resulting Constitution incorporated checks and balances across branches of government, reflecting Enlightenment ideals and ensuring that power remained with the people, fostering a democratic society.