The main social impact of the Enlightenment era on Europe was the promotion of individual rights, reason, and critical thinking over tradition and authority. Philosophers like John Locke, Voltaire, and Jean-Jacques Rousseau emphasized the importance of personal liberty, democracy, and the social contract, leading to questioning of monarchical and authoritarian rule. This intellectual movement encouraged people to pursue knowledge and challenge established norms, contributing to gradual shifts towards liberalism and secularism in society. The Enlightenment laid the groundwork for significant political changes, including revolutions in America and France, where Enlightenment ideals were central to discussions about governance, equality, and human rights.