The Age of Enlightenment

3. he was the first to report telescopic observations of the mountains on the moon, the moons of Jupiter, the phases of Venus, and the rings of Saturn
4. is a cosmological model in which the Sun is assumed to lie at or near a central point
6. proposed the separation of power
9. A group of radical thinkers and writers in France in the eighteenth century, including Voltaire and Jean-Jacques Rousseau.
10. best known for his promotion of the scientific method
11. is a debunked theory that the Earth is the center of the universe, with the sun and planets revolving around it.
13. is a system of government by the whole population or all the eligible members of a state
14. was a new era when people became smart
15. Common Sense pamphlet and Crisis papers were important influences on the American Revolution.
16. proposed a theory of the solar system, which contained elements of both the Earth-centred Ptolemaic system and the Sun-centred Copernican system.

1. ideas—the importance of free markets, assembly-line production methods, and gross domestic product (GDP)
2. a method of procedure that has characterized natural science since the 17th century, consisting of systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
5. discovered gravity
7. the split of the branch
8. known as the father of modern astronomy.
12. he invented analytic geometry, a method of solving geometric problems algebraically and algebraic problems geometrically.