Unit 2: Age of Reformation

Unit 2 covers the Protestant Reformation and the Catholic response. It moves from Martin Luther's challenge to the Church, through the reformers who followed him, into the religious wars that tore Europe apart, and ends with the Catholic Reformation and the art and anxieties of a divided continent.

2.2 Luther and the Protestant Reformation

The Protestant Reformation began as an argument inside the Catholic Church. Martin Luther, a German monk, objected to the sale of indulgences, pardons sold by the Church that reduced punishment for sin. In 1517 he circulated his Ninety-five Theses, a list of arguments against indulgences and Church corruption. The document is widely treated as the spark of the Reformation, though Luther himself was calling for debate and reform, not founding a new church.

Luther's central doctrine was justification by faith, the claim that salvation comes through faith alone, not through good works or the Church's sacraments. This is the theological point that made reconciliation impossible. If faith alone saves, then the Church's system of sacraments, pilgrimages, and indulgences is not just corrupt but unnecessary. Lutheranism, the tradition that followed his teachings, became a major confession in Germany and Scandinavia.

Two forces carried Luther's ideas past Wittenberg. The printing press spread his writings faster than any earlier dissent could travel, and the vernacular Bible, translations of scripture into everyday languages including Luther's own German New Testament, let ordinary people read the text themselves instead of receiving it through priests. Lay access to scripture was itself a challenge to clerical authority.

The Protestant work ethic belongs to the story's afterlife. It is the notion, developed by the sociologist Max Weber, that some Protestant groups treated disciplined work and wealth accumulation as signs of God's favor. It is an interpretation of Protestantism's effects, not a doctrine Luther preached.

2.3 Protestant Reform Continues

John Calvin, a French reformer who built his church in Geneva, became the second great architect of Protestantism. His theology centered on predestination, the doctrine that God has predetermined who will be saved and who will be damned. Calvinism, the tradition following his theology, spread from Switzerland to France, the Netherlands, and Scotland, carried by disciplined congregations and a model of church government that appealed to urban merchants.

Ulrich Zwingli shows that reform went beyond Luther and Calvin. Preaching in Zurich in the 1520s, he developed his own reformed theology and broke with Luther publicly, most famously over the Eucharist. His presence on the exam reminds you that the Reformation was a family of movements, not a single doctrine.

The Anabaptists were the radicals. They rejected infant baptism entirely and baptized only adults who could choose the faith for themselves. Both Catholics and other Protestants persecuted them, which tells you something important. The reformers agreed on less than the word Protestant suggests.

England's story was different. Henry VIII broke with Rome over his marriage, seeking an annulment the pope would not grant, and Parliament's Act of Supremacy in 1534 made the monarch head of the Church of England, the nation's new Protestant church. The break was political before it was theological, and under Henry the church kept most Catholic doctrine and practice.

The Huguenots were France's Calvinist Protestants, a large and often noble minority in a Catholic kingdom. Their persecution is the thread that connects the theology of this topic to the wars of the next one.

2.4 Wars of Religion

The Wars of Religion were the 16th- and 17th-century conflicts between Catholics and Protestants, and they show how theology became politics. In France, the French Wars of Religion (1562-1598) pitted the Catholic crown and nobility against the Huguenots in a series of civil wars where religious reform sharpened the existing struggle between monarchy and nobility. The St. Bartholomew's Day Massacre in August 1572, when thousands of Huguenots were killed in Paris, was the most notorious episode. The wars ended when Henry IV, himself a former Huguenot turned Catholic king, issued the Edict of Nantes in 1598, granting limited religious toleration to French Protestants.

The conflict crossed borders. The Spanish Armada of 1588 was Philip II of Spain's failed naval invasion of Protestant England, an attempt to crush Elizabeth I and return England to Catholicism that ended in disaster for Spain.

The Thirty Years' War (1618-1648) was the catastrophe. It began in Central Europe as a Catholic-Protestant struggle and drew in most of the major European powers, becoming a war about territory and dominance as much as about faith. It ended with the Peace of Westphalia in 1648, which recognized the sovereignty of states and the right of rulers to determine their territory's religion, and which finally recognized Calvinism as a legal confession alongside Lutheranism and Catholicism.

2.5 The Catholic Reformation

The Catholic Reformation, often called the Counter-Reformation, was the Catholic Church's 16th-century movement to reform itself and answer Protestantism. It worked through three instruments at once: doctrinal clarity, new religious orders, and discipline.

The Council of Trent met in three sessions between 1545 and 1563 and did two jobs. It reaffirmed Catholic doctrine against Protestant claims, holding that salvation requires faith plus good works, that all seven sacraments are valid, and that scripture and Church tradition carry equal authority. And it enacted genuine internal reform, requiring bishops to live in their dioceses, establishing seminaries to train priests, and curbing the sale of offices and other abuses.

The Jesuits, formally the Society of Jesus and recognized by the pope in 1540, were the order that carried the reformed Church outward. Founded by Ignatius of Loyola, a Spanish soldier turned priest, they spread Catholicism through schools and missionary work across Europe and around the world.

The Inquisition was the disciplinary arm, church courts that prosecuted heresy. It belongs in the same unit as the Jesuits because the Catholic response combined persuasion and punishment.

2.6 16th-Century Society and Politics

The witch hunts were the prosecution and execution of alleged witches, the large majority of them women. They reflected the social tensions and religious anxieties of a continent divided by faith, where both Catholic and Protestant authorities saw the devil's work in their neighbors.

2.7 Art of the 16th Century: Mannerism and Baroque Art

Mannerism was an artistic style marked by elongated forms and artificial elegance, a bridge between the balance of the Renaissance and what came next. El Greco (1541-1614), a Greek-born painter working in Toledo, Spain, is its defining figure. His stretched figures, unnatural colors, and distorted space create spiritual intensity rather than realism, in religious commissions that served Counter-Reformation Catholic Spain.

Baroque art was the dramatic, emotional style the Catholic Church embraced to inspire faith during the Counter-Reformation. Gian Lorenzo Bernini (1598-1680), the Italian Baroque sculptor and architect, made works like the Ecstasy of Saint Teresa and the colonnade of St. Peter's Square that used movement and grandeur to project the power of the papacy.

Confusions That Cost Points

Practice Questions

Original questions written for this guide in the style of the AP exam. Answers and explanations are on the next page, so complete the questions before checking them.

Answer Key

1. A. Justification by faith, salvation through faith alone, was Luther's central doctrine and the point that made reconciliation with Rome impossible. B is Calvin's predestination, the classic Luther-Calvin confusion this unit tests. C is the Anabaptist position on baptism, a radical view Luther himself opposed. D is true about Luther's criticism of indulgences but describes his objection to a Church practice, not his central theological claim.

2. B. Augsburg recognized only Lutherans and Catholics. Westphalia added Calvinism as a third legal confession and more fully recognized state sovereignty. A is wrong because neither settlement granted individual religious freedom; toleration applied to rulers and recognized confessions. C is wrong because the French Wars of Religion ended with the Edict of Nantes in 1598, half a century earlier. D is wrong because the Holy Roman Empire survived Westphalia, weakened, and lasted until 1806.

3. A. Henry broke with Rome to get his marriage annulled and made himself head of the church. The break was about authority and politics, and his church kept most Catholic doctrine. B is wrong because Henry retained the sacraments and most Catholic teaching. C is wrong because Calvin worked from Geneva and had no part in England's break. D is wrong because English Bible translation predated the break and was not its cause.

4. B. Baroque art used drama, movement, and emotional intensity deliberately, and the Catholic Church embraced it to inspire faith and project triumph during the Counter-Reformation. A describes Mannerism, which favors artificial elegance and elongated forms over emotional overwhelm. C describes the earlier Renaissance style, defined by balance and restraint rather than drama. D belongs to the medieval period, centuries before the Reformation.

One-Page Recall Check

• Explain what an indulgence was and why their sale provoked Luther's Ninety-five Theses.
• State Luther's doctrine of justification by faith and explain how it challenged Catholic teaching.
• Explain how the printing press and the vernacular Bible spread the Reformation.
• Distinguish Luther's justification by faith from Calvin's predestination.
• Describe the Anabaptists and explain why other reformers persecuted them.
• Explain why Henry VIII broke with Rome and what the Act of Supremacy did.
• Describe who the Huguenots were and what happened on St. Bartholomew's Day in 1572.
• Explain what the Edict of Nantes did and what it did not do.
• Summarize the Thirty Years' War: how it started, who was drawn in, and how it ended.
• State what the Peace of Westphalia settled and how it differed from the Peace of Augsburg.
• Describe the Council of Trent's two jobs: reaffirming doctrine and enacting reform.
• Explain the Jesuits' role in the Catholic Reformation and name their founder.
• Explain why the witch hunts belong to this period rather than the Middle Ages.
• Contrast Mannerism and Baroque art, naming one artist for each.

Key terms for this unit

Indulgences, Martin Luther, Protestant Reformation, Protestant work ethic, Justification by faith, Lutheranism, Ninety-five Theses, Vernacular Bible, Anabaptists, Henry VIII, John Calvin, Predestination, Calvinism, Church of England (Anglican Church), Huguenots, Ulrich Zwingli, Edict of Nantes, French Wars of Religion, Peace of Westphalia (1648), Thirty Years' War, Wars of Religion, Spanish Armada, St. Bartholomew's Day Massacre, Catholic Reformation (Counter-Reformation), Council of Trent, Jesuits (Society of Jesus), Ignatius of Loyola, Inquisition, Witch hunts, Baroque art, Mannerism, El Greco, Gian Lorenzo Bernini.

About this guide. Written for Rycal and aligned to the College Board AP European History course framework, Unit 2. All questions and explanations are original Rycal writing. Rycal is independent and is not affiliated with or endorsed by the College Board.