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AP European History › Unit 4

AP European History Unit 4: Scientific, Philosophical, and Political Developments

10 to 15% of the exam · 180 practice questions · 5 free-response questions

This unit follows a new way of knowing. Scientists such as Copernicus, Galileo, and Newton used observation and experiment to challenge ancient authority, and Enlightenment thinkers applied reason to government, religion, and society. You will also study 18th-century population growth, consumer culture, and enlightened absolutism. The exam asks you to analyze philosophers' writings and explain causes and effects. Students often assume every Enlightenment thinker rejected God, when many were deists who criticized organized religion instead. They also confuse enlightened absolutists, who reformed from above, with rulers who shared power.

Practice this unit

White belt · 60 questionsRegular · 60 questionsBlack belt · 60 questionsFree response

White belt covers core terms and foundational ideas, Regular is set at exam level, and Black belt has harder multi-step questions.

Topics in this unit

Free-response questions

Sample questions

These are taken from the Regular set, with the answer and explanation shown.

Topic 4.2 The Scientific Revolution

William Harvey, English physician to King Charles I, dedications to On the Motion of the Heart and Blood in Animals (De Motu Cordis), 1628. The book argued that the heart pumps the same blood around the body in a continuous circuit.

Dedication to King Charles I: "The heart of animals is the foundation of their life, the sovereign of everything within them, the sun of their microcosm, that upon which all growth depends, from which all power proceeds. The King, in like manner, is the foundation of his kingdom, the sun of the world around him, the heart of the republic, the fountain whence all power, all grace doth flow."

Letter to Doctor Argent, president of the Royal College of Physicians, and other physicians: "I profess both to learn and to teach anatomy, not from books but from dissections; not from the positions of philosophers but from the fabric of nature."

William Harvey, An Anatomical Disquisition on the Motion of the Heart and Blood in Animals (1628), trans. Robert Willis (1847), Everyman's Library ed. (London: J. M. Dent, 1906), via Project Gutenberg. Source

1. Harvey's approach to anatomy most closely resembled the earlier work of which of the following?

  1. ANicolaus Copernicus, who used mathematics to place the Sun at the center
  2. BAndreas Vesalius, who corrected Galen by dissecting human bodies
  3. CThomas Aquinas, who joined Aristotle's philosophy with Christian faith
  4. DClaudius Ptolemy, who built an Earth-centered model of the heavens

Answer: B. Vesalius published On the Fabric of the Human Body in 1543. He dissected human bodies himself and found errors in Galen, who had mostly dissected animals. Harvey, who studied at Padua where Vesalius had taught, used the same hands-on method.

Common trap: Copernicus is tempting because he also challenged ancient authority. But the question asks about approach to anatomy. Match the method and the field, not just the fact that both were "revolutionary."

Topic 4.3 The Enlightenment

Voltaire (François-Marie Arouet), French writer, Letters on the English, Letter VI, 1733, written after his stay in England, and the article "Tolerance" in his Philosophical Dictionary (first edition 1764)

Source 1, Letters on the English (1733): "Take a view of the Royal Exchange in London, a place more venerable than many courts of justice ... There the Jew, the Mahometan, and the Christian transact together, as though they all professed the same religion, and give the name of infidel to none but bankrupts. ... If one religion only were allowed in England, the Government would very possibly become arbitrary; if there were but two, the people would cut one another’s throats; but as there are such a multitude, they all live happy and in peace."

Source 2, Philosophical Dictionary: "What is tolerance? it is the consequence of humanity. We are all formed of frailty and error; let us pardon reciprocally each other's folly—that is the first law of nature."

Voltaire, Letters on England, ed. Henry Morley (London: Cassell, 1894), Letter VI, via Project Gutenberg. Source

Voltaire, The Philosophical Dictionary, selected and trans. H. I. Woolf (New York: Knopf, 1924), "Tolerance," via the Hanover College History Department. Source

2. Voltaire's description of the London Royal Exchange in Source 1 was most likely intended to

  1. Apraise the Church of England as the one true Christian faith
  2. Bcriticize French religious intolerance by contrast with England
  3. Cwarn French readers about the dangers posed by foreign merchants
  4. Ddefend Louis XIV's revocation of the Edict of Nantes

Answer: B. Voltaire wrote for French readers after living in England. In England, people of different faiths traded peacefully, while France had banned Protestant worship in 1685. Praising England was an indirect way to criticize France.

Common trap: The Church of England choice misreads the passage. Voltaire praises having "a multitude" of religions, not one official church.

Topic 4.6 Enlightened and Other Approaches to Power

Frederick II ("the Great"), king of Prussia, Essay on the Forms of Government and the Duties of Rulers, 1777

Rulers should always remind themselves that they are men like the least of their subjects. The sovereign is the foremost judge, general, financier, and minister of his country, not merely for the sake of his prestige. Therefore, he should perform with care the duties connected with these offices. He is merely the principal servant of the State. Hence, he must act with honesty, wisdom, and complete disinterestedness in such a way that he can render an account of his stewardship to the citizens at any moment.

Frederick II, "Forms of Government and the Duties of Rulers" (1777), trans. J. Ellis Barker, The Foundations of Germany (London: John Murray, 1918), via German History in Documents and Images. Source

3. Frederick's statement that he could "render an account of his stewardship to the citizens" should be read in light of the fact that

  1. APrussia's elected parliament could remove a king who governed badly
  2. BFrederick had been chosen king by a vote of nobles and town leaders
  3. CPrussian peasants had gained the right to vote in the 1740s
  4. DPrussia had no institution that could hold the king to account

Answer: D. Frederick talks about accountability, but no Prussian institution could check him. He inherited the throne, ruled without a parliament, and made the final decisions himself. His accountability was a moral duty, not a legal limit.

Common trap: Do not take the source at face value. "Render an account" sounds like elections, but Prussia had none. Use outside knowledge to test the claim.

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