1) The Scientific Revolution of the 16th-17th centuries saw a shift from the Ptolemaic view of Earth as the center of the universe to the Copernican model that placed the Sun at the center. Scientists like Galileo Galilei used new tools like the telescope to make careful observations. 2) The Enlightenment was an intellectual movement that promoted reason and the scientific method over tradition and faith. Philosophers like John Locke argued people had natural rights to life, liberty, and property. In France, philosophes like Voltaire advocated for tolerance and freedom of expression. 3) Enlightenment ideas spread through Europe in the 1700s. Monarchs like Frederick the Great and Joseph