AP®︎ European History: Unit 4 Flashcards

Master key terms and definitions for Unit 4 of AP European History – Scientific, Philosophical, and Political Developments to help you prep for quizzes and the AP exam.


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Term

Renaissance Humanism

Definition

Intellectual movement that revived classical Greek and Roman learning, emphasized human potential, and encouraged critical study of texts and nature

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Renaissance Humanism
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Intellectual movement that revived classical Greek and Roman learning, emphasized human potential, and encouraged critical study of texts and nature

Printing Press
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Movable-type technology pioneered in Europe by Johannes Gutenberg that greatly expanded the production and circulation of books and ideas

Protestant Reformation
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Sixteenth-century religious movement that challenged papal authority and divided Western Christianity into Catholic and Protestant churches

Scientific Revolution
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Mid-16th- to late-17th-century transformation that elevated observation, experimentation, mathematics, and tested claims over inherited authority in explaining nature

Unit 4: Learning Objective BKC-1.1.IV.C
Aristotelian-Ptolemaic Cosmos (Geocentric Model)
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Traditional model with a stationary Earth at the center, concentric heavenly spheres, and celestial bodies moving in supposedly perfect circles

Unit 4: Learning Objective BKC-1.1.IV.A
Heliocentric Model (Copernican System)
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Sun-centered model in which Earth rotates on its axis and, like the other planets, travels around the Sun

Unit 4: Learning Objective BKC-1.1.IV.A
Nicolaus Copernicus
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Polish cleric who proposed the heliocentric system in 1543, making Earth a moving planet while retaining circular orbits and epicycles

Unit 4: Learning Objective BKC-1.1.IV.A
Tycho Brahe
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Danish astronomer whose precise observations and evidence of celestial change aided Kepler, though Brahe favored a geoheliocentric compromise

Unit 4: Learning Objective BKC-1.1.IV.A
Johannes Kepler
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Astronomer who used Brahe’s data to formulate mathematical laws of planetary motion and replace circular orbits with ellipses

Unit 4: Learning Objective BKC-1.1.IV.A
Kepler’s Laws of Planetary Motion
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Planets follow elliptical orbits, sweep equal areas in equal times, and have orbital periods mathematically related to their distances from the Sun

Unit 4: Learning Objective BKC-1.1.IV.A
Galileo Galilei
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Used telescopic evidence, experiments, and mathematics to challenge Aristotelian-Ptolemaic ideas; forced to recant heliocentrism in 1633

Unit 4: Learning Objective BKC-1.1.IV.A
Roman Inquisition
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Catholic tribunal established in 1542 to investigate and prosecute heresy, most famously compelling Galileo to recant heliocentrism

Isaac Newton
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Author of the 1687 Principia who synthesized earlier work through three laws of motion and universal gravitation, uniting earthly and celestial physics

Unit 4: Learning Objective BKC-1.1.IV.A
Principia Mathematica
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Newton’s 1687 work that presented his laws of motion and universal gravitation in a mathematical synthesis of earthly and celestial physics

Law of Universal Gravitation
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Newton’s principle that every body attracts every other body, so the same force explains falling objects, lunar orbits, and planetary motion

Unit 4: Learning Objective BKC-1.1.IV.A
Mechanical Universe
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Conception of nature as an orderly, integrated machine governed by universal laws discoverable through observation, reason, and mathematics

Unit 4: Learning Objective BKC-1.1.IV.A
Andreas Vesalius
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Anatomist whose direct human dissections exposed errors in Galen; his 1543 anatomical work made observed anatomy more authoritative than ancient texts

Unit 4: Learning Objective BKC-1.1.IV.B
Galen and Humoral Theory
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Ancient medical system that explained health through the balance of four bodily humors and included anatomical and physiological claims later challenged by direct observation

Unit 4: Learning Objective BKC-1.1.IV.B
William Harvey
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Physician whose 1628 work used observation, ligatures, and quantitative reasoning to show that the heart pumps blood continuously through an integrated circulatory system

Unit 4: Learning Objective BKC-1.1.IV.B
Francis Bacon
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Advocate of systematic observation, controlled investigation, and inductive reasoning who criticized unsupported reliance on ancient authority

Unit 4: Learning Objective BKC-1.1.IV.C
Inductive Reasoning
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Drawing a broader generalization from numerous particular observations and experiments

Unit 4: Learning Objective BKC-1.1.IV.C
Empiricism
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The position that knowledge is rooted in sensory experience, observation, and evidence

Unit 4: Learning Objective BKC-1.1.IV.C
René Descartes
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Rationalist who used methodological doubt, deduction, and mathematics to seek certainty and describe the physical universe mechanically

Unit 4: Learning Objective BKC-1.1.IV.C
Deductive Reasoning
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Deriving particular conclusions through logical steps from general principles or premises accepted as true

Unit 4: Learning Objective BKC-1.1.IV.C
Rationalism
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Confidence in reason and logical analysis as sources of reliable knowledge

Unit 4: Learning Objective BKC-1.1.IV.C
Scientific Method
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Gradually developed systematic use of observation, hypotheses, experimentation, measurement, mathematical analysis, testing, and revision

Unit 4: Learning Objective BKC-1.1.IV.C
Royal Society of London
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English scientific academy founded in 1660 that promoted collaborative observation, experimentation, publication, and the exchange of scientific findings

Alchemy and Astrology
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Early modern pursuits that sought to transform matter and use celestial configurations to explain earthly events, often overlapping with natural philosophy

Unit 4: Learning Objective BKC-1.1.IV.D
The Enlightenment
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Late-17th- and 18th-century movement that applied reason, observation, and criticism to society and challenged inherited authority

Unit 4: Learning Objective DKC-2.3.I
Philosophes
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Enlightenment public intellectuals who used reason and criticism to advocate social reform

Unit 4: Learning Objective CKC-2.3.I.A
Natural Law
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Universal moral or political principles discoverable through reason rather than dependent on a ruler or church

Unit 4: Learning Objective DKC-2.3.I
Skepticism
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The method of doubting claims that lack sufficient evidence rather than accepting them on authority

Unit 4: Learning Objective DKC-2.3.I
Enlightenment Idea of Progress
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Belief that education, open inquiry, and rational laws could reduce ignorance, cruelty, and arbitrary government

Unit 4: Learning Objective CKC-2.3.I.A
Thomas Hobbes
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English thinker who argued in Leviathan that individuals escape a violent state of nature by granting extensive power to a sovereign through a social contract

Social Contract
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The theory that legitimate political authority arises from an agreement among individuals to establish government

Unit 4: Learning Objective CKC-2.3.I.B
John Locke
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English thinker who defended natural rights, government by consent, limited power, and the right to replace rulers who violated their trust

Unit 4: Learning Objective CKC-2.3.I.B
Natural Rights
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Rights possessed before government exists, conventionally summarized by Locke as life, liberty, and property

Unit 4: Learning Objective CKC-2.3.I.B
Consent of the Governed
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The principle that legitimate political authority derives from the agreement of the people subject to it

Unit 4: Learning Objective DKC-2.3.III.A
Two Treatises of Government
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Locke’s defense of natural rights, limited government, popular consent, and the right to overthrow rulers who violate their political trust

Tabula Rasa (Blank Slate)
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Locke’s idea that the mind begins without innate ideas and is shaped by experience, education, and environment

Unit 4: Learning Objective DKC-2.3.I
Montesquieu
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French thinker who compared political systems and argued that divided governmental powers were necessary to preserve liberty

Unit 4: Learning Objective CKC-2.3.I.A
Separation of Powers
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Division of legislative, executive, and judicial functions so that political power checks political power

Unit 4: Learning Objective CKC-2.3.I.A
Voltaire
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French philosophe who used satire and history to promote civil liberties, toleration, free expression, and legal reform

Unit 4: Learning Objective CKC-2.3.I.A
Denis Diderot
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French philosophe who directed the Encyclopédie and later explored materialist and atheistic explanations of nature

Unit 4: Learning Objective DKC-2.3.IV.A
Encyclopédie
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Diderot’s multivolume work that organized practical and intellectual knowledge while criticizing superstition, intolerance, and hierarchy

Unit 4: Learning Objective CKC-2.3.I.A
Jean-Jacques Rousseau
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Thinker who defended popular sovereignty and collective self-rule but excluded women from direct political citizenship

Unit 4: Learning Objective CKC-2.3.I.C
General Will
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Rousseau’s term for the common interest of the political community rather than the sum of private desires

Unit 4: Learning Objective CKC-2.3.I.B
Émile
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Rousseau’s educational treatise advocating development according to nature while assigning sharply different social and educational roles to boys and girls

Mary Wollstonecraft
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Author of A Vindication of the Rights of Woman, arguing that women’s apparent inferiority resulted from denied education, not nature

Unit 4: Learning Objective CKC-2.3.I.C
A Vindication of the Rights of Woman
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Wollstonecraft’s 1792 argument that women were rational beings whose apparent inferiority resulted from unequal education and social conditions

Cesare Beccaria
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Italian reformer who opposed torture and arbitrary punishment and advocated prompt, lawful, proportionate penalties designed to deter crime

Unit 4: Learning Objective CKC-2.3.I.A
Immanuel Kant
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German thinker who defined enlightenment as humanity’s emergence from intellectual dependence through the courageous use of reason

Unit 4: Learning Objective DKC-2.3.I
Deism (Natural Religion)
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Belief in a creator known through reason and nature while questioning revelation, miracles, and clerical authority

Unit 4: Learning Objective DKC-2.3.IV.A
Religious Toleration
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The principle that civil rights and public order should not depend on enforced religious conformity

Unit 4: Learning Objective DKC-2.3.IV.B
Salons
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Elite gatherings in private homes where guests discussed philosophy, literature, science, and politics

Unit 4: Learning Objective DKC-2.3.II.A
Salonnières
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Women who hosted and directed salons, selected guests, and connected writers with patrons

Unit 4: Learning Objective DKC-2.3.II.A
Madame Geoffrin
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Influential Parisian salonnière who hosted leading Enlightenment writers, artists, nobles, and foreign visitors and helped connect philosophes with patrons

Coffeehouses
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Commercial meeting places where mostly male patrons read news and debated politics, trade, and ideas

Unit 4: Learning Objective DKC-2.3.II.A
Republic of Letters
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International network of thinkers connected through correspondence, travel, translation, and print

Unit 4: Learning Objective DKC-2.3.II.A
Public Sphere
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Social space in which private individuals discussed public affairs and formed judgments outside formal government institutions

Unit 4: Learning Objective DKC-2.3.II.A
Print Culture and Public Opinion
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Expanding circulation of books, newspapers, pamphlets, and periodicals that enabled a growing reading public to form and express judgments about public affairs

Unit 4: Learning Objective FKC-2.3.II.B
Adam Smith
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Scottish economist who argued in The Wealth of Nations that labor, specialization, competition, and freer exchange created national wealth

Unit 4: Learning Objective DKC-2.3.III.B
The Wealth of Nations
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Adam Smith’s 1776 work arguing that specialization, competition, and freer exchange produced national wealth more effectively than mercantilist regulation

Laissez-Faire
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The principle that government should let economic activity operate with fewer detailed controls

Unit 4: Learning Objective DKC-2.3.III.B
Invisible Hand
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Smith’s metaphor for how individual choices within competitive markets can unintentionally promote broader economic benefits

Unit 4: Learning Objective DKC-2.3.III.B
Physiocrats
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French economists who sought natural economic laws, treated agriculture as the source of surplus, and opposed mercantilist restrictions

Unit 4: Learning Objective DKC-2.3.III.B
Mercantilism
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Economic system in which governments regulated trade, protected domestic production, accumulated bullion, and exploited colonies to increase state power

Agricultural Revolution
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The long, uneven transformation that increased agricultural productivity and commercialization through improved rotations, crops, breeding, tools, landholding, and transportation

Unit 4: Learning Objective EKC-2.4.I.A
Enclosure
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Consolidation of scattered strips and common lands into private farms, enabling agricultural innovation while weakening customary rights and displacing some rural people

Unit 4: Learning Objective EKC-2.4.IV.A
Crop Rotation
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Planting different crops in sequence, including fodder and soil-restoring crops, to reduce fallow land and maintain fertility

Unit 4: Learning Objective EKC-2.4.I.A
Potato
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A Columbian Exchange crop that produced substantial nutrition on small or marginal plots and helped support European population growth

Unit 4: Learning Objective EKC-2.4.I.A
Smallpox Inoculation (Variolation)
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Deliberately introducing material from a smallpox sore to cause a usually milder infection and subsequent immunity

Unit 4: Learning Objective EKC-2.4.I.B
Edward Jenner and Vaccination
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English physician who demonstrated in 1796 that inoculation with cowpox could provide safer immunity against smallpox

European Marriage Pattern
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Northwestern European pattern of relatively late marriage, independent household formation, and a significant minority who never married, limiting fertility

Unit 4: Learning Objective EKC-2.4.III.A
Declining Child Mortality
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Eighteenth-century fall in the proportion of children dying young that contributed to population growth and greater parental investment in childhood

New Conception of Childhood
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Growing treatment of childhood as a distinct stage requiring specialized nurture and education as child mortality fell and family resources increased

Unit 4: Learning Objective EKC-2.4.III.B
Rural-to-Urban Migration
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Movement from the countryside to cities as agricultural change and land pressure displaced workers while urban employment attracted them

Unit 4: Learning Objective EKC-2.4.IV.A
Policing of Marginal Groups
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Urban concentration of poverty and disorder prompted increased policing, registration, institutional confinement, and regulation of beggars, vagrants, prostitutes, and other marginal groups

Unit 4: Learning Objective EKC-2.4.IV.C
Consumer Revolution
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The eighteenth-century expansion in everyday purchasing of household goods and imported commodities, especially among prosperous and middling households

Unit 4: Learning Objective FKC-2.4.II
Domestic Privacy and Comfort
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Prosperous and middling families increasingly devoted specialized rooms, goods, and resources to private family life and household comfort

Unit 4: Learning Objective EKC-2.4.III.B
Baroque
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Grand, dramatic, emotional, and richly ornamented art and music used into about 1750 to inspire religious devotion and display monarchical power

Unit 4: Learning Objective FKC-2.3.V.A
Rococo
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A light, intimate, ornate style featuring delicate colors, curved forms, romantic play, and aristocratic leisure in private settings

Unit 4: Learning Objective FKC-2.3.V
Neoclassicism
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A late-eighteenth-century revival of Greek and Roman forms emphasizing clarity, order, restraint, civic virtue, citizenship, and public duty

Unit 4: Learning Objective FKC-2.3.V.B
Jacques-Louis David
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Neoclassical painter whose Oath of the Horatii elevated discipline, sacrifice, and civic duty above private emotion and luxury

Unit 4: Learning Objective FKC-2.3.V.B
Enlightened Absolutism / Enlightened Despotism
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Centralized monarchy that imposed selected Enlightenment reforms from above while preserving the ruler’s sovereignty and autocratic power

Unit 4: Learning Objective GKC-2.1.I.C
Frederick II / Frederick the Great
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Prussian enlightened absolutist who promoted toleration, education, legal reform, and economic development while preserving autocracy, Junker privilege, and serfdom

Unit 4: Learning Objective GKC-2.1.I.C
Maria Theresa
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Habsburg ruler who, after losing Silesia, strengthened central administration, reformed taxation and the army, and expanded state involvement in education despite limited commitment to Enlightenment toleration

Unit 4: Learning Objective GKC-2.1.I.C
Joseph II
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Habsburg enlightened absolutist who pursued toleration, reduced serfdom, rationalized law, and centralized administration but provoked resistance and revoked many reforms

Unit 4: Learning Objective GKC-2.1.I.C
Patent of Toleration
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Joseph II’s 1781 decree permitting limited private worship and wider civil opportunities for Lutherans, Calvinists, and Orthodox Christians

Unit 4: Learning Objective GKC-2.3.IV.C
Catherine II / Catherine the Great
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Russian ruler who embraced Enlightenment rhetoric and limited reforms while preserving autocracy, expanding serfdom, confirming noble privilege, and enlarging Russia

Unit 4: Learning Objective GKC-2.1.I.C
Peace of Westphalia
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1648 settlement ending the Thirty Years’ War that confirmed imperial estates’ autonomy and recognized Calvinism, limiting centralization of the Holy Roman Empire

Unit 4: Learning Objective HKC-2.1.III.A
Brandenburg-Prussia / Prussia
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Scattered Hohenzollern territories unified through centralized administration and a powerful standing army into a major European state

Unit 4: Learning Objective HKC-2.1.III.A
Habsburg Monarchy
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Multinational collection of Austrian, Bohemian, Hungarian, and southeastern European hereditary lands that became the main basis of Habsburg power

Unit 4: Learning Objective HKC-2.1.III.A
Diplomatic Revolution
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The 1756 reversal of European alliances in which Austria joined France against Prussia while Britain allied with Prussia

Seven Years’ War
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Global war from 1756 to 1763 in which Britain and Prussia defeated France, Austria, and their allies, expanding British imperial power and confirming Prussia’s great-power status

Partitions of Poland
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Divisions of Polish territory by Russia, Prussia, and Austria in 1772, 1793, and 1795 that erased the Polish-Lithuanian Commonwealth from the map