How do historians reason about the causes and effects of the Scientific Revolution and the Enlightenment?
Topic 4.7 Causation in the Age of the Scientific Revolution and the Enlightenment: applying the historical reasoning skill of causation to the intellectual transformation of the 17th and 18th centuries.
A focused answer to AP European History Topic 4.7, the causation reasoning skill applied to Unit 4: the causes of the Scientific Revolution and Enlightenment, their effects on government, religion, and revolution, and how to structure a causation LEQ or DBQ that ranks causes and effects.
Reviewed by: AI editorial process; not yet individually human-reviewed
Have a quick question? Jump to the Q&A page
Jump to a section
What this topic is asking
Topic 4.7 is a reasoning-skill topic. The College Board is not adding new content; it is asking you to apply the historical reasoning skill of causation to Unit 4. You should be able to explain the causes of the Scientific Revolution and the Enlightenment and the effects they had on government, religion, and the coming age of revolution, and to weigh which mattered most.
What causation means on the AP exam
The exam tests three reasoning skills: causation (anchored here), comparison, and continuity and change over time. A prompt that says "evaluate the most important cause of" or "evaluate the most important effect of" is signalling causation.
Two ready-made causal chains
Unit 4 hands you two causal stories you can deploy on the exam.
The causes of the new thought
| Cause | How it contributed |
|---|---|
| The Renaissance | Recovered classical learning and prized observation |
| The Reformation | Showed that established authority could be challenged |
| The printing press | Spread ideas and built cumulative knowledge |
| Exploration and commerce | Brought new evidence and a prosperous, literate public |
The effects of the new thought
| Effect | What it produced |
|---|---|
| A new scientific worldview | Nature seen as rational, orderly, and knowable |
| New political ideas | Natural rights, social contract, separation of powers |
| Challenges to authority | Pressure on divine-right monarchy and the Church |
| Enlightened absolutism | Reform from above by Frederick, Catherine, and Joseph II |
| Revolution | The principles behind the American and French Revolutions |
Reasoning well: rank and explain
Distinguishing causes from effects
A clean causation answer keeps the two sides apart. The new thought was caused by the Renaissance, Reformation, printing, and commerce; it produced a new worldview, new political ideas, challenges to authority, and revolution. The strongest essays note that an effect can become a new cause: the Enlightenment's political ideas (an effect) then caused the revolutions of Unit 5. The printing press is a rich example, since it helped cause the new thought and amplified its effects, the kind of link that earns the complexity point.
Try this
Q1. Name the three historical reasoning skills tested on the AP exam. [Recall]
- Cue. Causation, comparison, and continuity and change over time.
Q2. Explain how an effect of the Enlightenment became a cause of further change. [Short explanation]
- Cue. The Enlightenment's political ideas (natural rights, the social contract, popular sovereignty), an effect of the movement, then caused the American and French Revolutions, showing how an effect can become a new cause.
Exam-style practice questions
Practice questions written in the style of College Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
AP 2020 (style)6 marksEvaluate the most important effect of the Scientific Revolution and the Enlightenment on European society in the period c. 1650 to c. 1789.Show worked answer →
A Long Essay Question (LEQ), scored on the 6-point causation rubric.
Thesis (1): "The most important effect was political: by grounding authority in reason and consent, Enlightenment thought undercut divine-right monarchy and supplied the principles of the revolutions to come, though effects on religion and reform mattered too."
Contextualization (1): the Renaissance, Reformation, and printing that enabled the new thought.
Evidence (2): the new scientific method and worldview; natural rights and the social contract; toleration and deism; enlightened absolutism.
Causation analysis (2): rank the political effect as primary and explain WHY, then add complexity by showing how the effects reinforced one another.
AP 2021 (style)3 marksBriefly describe ONE cause of the Scientific Revolution. Briefly describe ONE effect of the Enlightenment. Briefly explain ONE way a cause and an effect in this period were linked.Show worked answer →
A Short Answer Question (SAQ) testing causation, 3 points.
A. Cause of the Scientific Revolution: the printing press, which spread new ideas and let scientists build on one another's work.
B. Effect of the Enlightenment: the spread of natural-rights and social-contract ideas that justified challenges to absolute monarchy.
C. Link: printing both helped cause the Scientific Revolution (spreading observations) and amplified the Enlightenment's effects (spreading the philosophes' ideas), so one factor shaped cause and effect alike.
The key is to keep cause and effect separate and then connect them.
Related dot points
- Topic 4.1 Contextualizing the Scientific Revolution and the Enlightenment: the intellectual and social conditions, from the Renaissance and Reformation to printing and commerce, that set the stage for new ways of thinking about nature and society.
A focused answer to AP European History Topic 4.1, setting the scene for Unit 4: how the Renaissance, the Reformation's challenge to authority, printing, exploration, and commerce created the conditions for the Scientific Revolution and the Enlightenment to reshape European thought.
- Topic 4.2 The Scientific Revolution: heliocentrism, the new physics of Newton, the scientific method, and the shift from ancient authority to observation, experiment, and mathematics.
A focused answer to AP European History Topic 4.2, covering the Scientific Revolution: the shift from geocentrism to heliocentrism (Copernicus, Galileo, Kepler), Newton's laws, the scientific method (Bacon's empiricism and Descartes' rationalism), and the new view of a rational, knowable universe.
- Topic 4.3 The Enlightenment: the philosophes and their ideas on government, rights, religion, and the economy, from Locke and Montesquieu to Rousseau, Voltaire, and Smith.
A focused answer to AP European History Topic 4.3, covering the Enlightenment: the philosophes and their core ideas (natural rights and social contract in Locke and Rousseau, separation of powers in Montesquieu, toleration in Voltaire, free markets in Smith), and how applying reason to society challenged traditional authority.
- Topic 4.6 Enlightened and Other Approaches to Power: enlightened absolutism (Frederick the Great, Catherine the Great, Joseph II), the limits of reform, and continuities in the use of state power.
A focused answer to AP European History Topic 4.6, covering enlightened absolutism: how Frederick the Great, Catherine the Great, and Joseph II used Enlightenment ideas to reform their states (legal codes, toleration, education) while keeping centralized royal power, and why their reforms had limits.
- Topic 5.4 The French Revolution: the causes of the Revolution, its liberal opening phase, the radical phase and the Terror, and the collapse of the old regime in France.
A focused answer to AP European History Topic 5.4, covering the French Revolution: its causes (fiscal crisis, social inequality, Enlightenment ideas), the liberal phase of 1789 (the National Assembly, the Declaration of the Rights of Man), and the radical phase (the Republic, the Terror under the Jacobins).
Sources & how we know this
- AP European History Course and Exam Description — College Board (2020)