Church History trivia, two thousand years walked carefully.

In what year did the East-West "Great Schism" formally divide Western Catholic and Eastern Orthodox Christianity?

1. 325
2. 787
3. 1054
4. 1517

"Now I appeal to you, brothers, by the name of our Lord Jesus Christ, that all of you agree, and that there be no divisions among you, but that you be united in the same mind and the same judgment."1 Corinthians 1:10

In 1054 the legates of Pope Leo IX and Patriarch Michael Cerularius exchanged mutual excommunications in Hagia Sophia, formalising centuries of drift over the Filioque clause, papal authority, and liturgy. The two communions remain separate to this day, though the 1965 mutual lifting of those excommunications by Paul VI and Athenagoras began a long thaw.

Which Roman emperor issued the Edict of Milan in AD 313, granting toleration to Christians across the empire?

1. Diocletian
2. Constantine
3. Nero
4. Theodosius

"It has pleased us to remove all conditions whatsoever … that every one of those who have a common wish to follow the religion of the Christians may from this moment freely and unconditionally proceed to observe the same."Edict of Milan, AD 313 (recorded by Lactantius, De Mortibus Persecutorum 48)

Constantine and his eastern co-emperor Licinius met at Milan and agreed to end the persecutions begun under Diocletian. The edict did not make Christianity the state religion — that came later under Theodosius in 380 — but it ended legal sanction for harming believers and restored confiscated property to the churches.

In which year did the Protestant Reformation traditionally begin, with the posting of the 95 Theses?

1. 1492
2. 1453
3. 1517
4. 1545

"Out of love and zeal for the truth and the desire to bring it to light, the following theses will be publicly discussed at Wittenberg…"Martin Luther, opening of the 95 Theses (1517)

Luther's intent was an academic disputation about the sale of indulgences, not the founding of a new church. But the theses were rapidly translated, printed, and circulated across Europe — the first religious crisis amplified by the new printing press — and the Reformation date is fixed by tradition to October 31, 1517.

Which council, convened in AD 325, produced the original version of the Nicene Creed?

1. The Council of Chalcedon
2. The Council of Trent
3. The First Council of Nicaea
4. The Second Council of Constantinople

"We believe in one God, the Father Almighty, Maker of all things visible and invisible. And in one Lord Jesus Christ … begotten, not made, of one substance with the Father."Original Nicene Creed, AD 325

Convened by Constantine to settle the Arian controversy, Nicaea I gathered roughly 300 bishops from across the empire. The creed's key phrase was homoousios — "of the same substance" — affirming that the Son shares the Father's very being. The fuller version most churches recite today is the expansion made at Constantinople in 381.

Which 451 council formally defined Christ as one person in two natures, fully divine and fully human?

1. The Council of Nicaea
2. The Council of Ephesus
3. The Council of Chalcedon
4. The Council of Trent

"One and the same Christ, Son, Lord, Only-begotten, made known in two natures without confusion, without change, without division, without separation."Definition of Chalcedon (AD 451)

Chalcedon's two-nature formula remains the touchstone of orthodox Christology for Catholic, Orthodox, and Protestant churches alike. Several Eastern communions (the Oriental Orthodox — Copts, Armenians, Ethiopians, Syriacs) did not accept the wording and broke communion at this council, a split that has only begun to thaw in modern ecumenical dialogue.

Which Council of Trent (1545–1563) was the Catholic Church's principal response to the Reformation?

1. The Council of Florence
2. The First Vatican Council
3. The Council of Trent
4. The Council of Constance

"If anyone says that by faith alone the impious is justified … let him be anathema."Council of Trent, Session 6, Canon 9 (1547)

Meeting in three periods over eighteen years in the Tyrolean city of Trent, the council restated Catholic teaching on justification, the sacraments, Scripture and tradition, and the canon of the Bible. It also reformed clerical discipline and standardized the liturgy — the "Tridentine" mass remained the Roman rite until Vatican II.

During the "Avignon Papacy" of the 14th century, where did the Roman popes reside?

1. Constantinople
2. Florence
3. Avignon, in southern France
4. Aachen

"The popes have made themselves a Babylonian captivity at Avignon, far from the tombs of the Apostles."Petrarch, letters from Avignon (mid-14th century)

From 1309 to 1377 seven successive popes — all French — reigned from Avignon rather than Rome. Petrarch and Catherine of Siena pressed for return; Gregory XI finally did so in 1377, but his death the next year triggered the Western Schism with rival popes in Rome and Avignon, which dragged on until the Council of Constance in 1417.

Which 16th-century missionary order, founded by Ignatius of Loyola, became central to the Catholic Counter-Reformation?

1. The Franciscans
2. The Dominicans
3. The Benedictines
4. The Society of Jesus (Jesuits)

"To be ready at any hour to go without questioning … wherever His Holiness shall command, whether he send us to the Turks or other infidels, even to the lands they call the Indies."Formula of the Institute of the Society of Jesus, approved 1540

Ignatius, a wounded Basque soldier turned mystic, gathered six companions at Montmartre in 1534 who took vows of poverty, chastity, and a "fourth vow" of special obedience to the pope. Within a century the Jesuits had founded schools across Europe, sent missionaries to China, Japan, India and the Americas, and become the intellectual spearhead of Counter-Reformation theology.

Which Catholic ecumenical council (1962–1965) introduced vernacular liturgy and ecumenical engagement?

1. The First Vatican Council
2. The Second Vatican Council
3. The Council of Trent
4. The Synod of Dordrecht

"Mother Church earnestly desires that all the faithful be led to that full, conscious, and active participation in liturgical celebrations which is demanded by the very nature of the liturgy."Sacrosanctum Concilium 14 (Vatican II, 1963)

Opened by John XXIII as a council of aggiornamento ("bringing up to date"), Vatican II reformed the Mass, recognized non-Catholic Christians as separated brethren, affirmed religious liberty, and re-emphasized the universal call to holiness. It remains the most significant reshaping of Catholic life since Trent four centuries earlier.

Which 1934 declaration, drafted largely by Karl Barth, rejected Nazi influence on the German Protestant church?

1. The Augsburg Confession
2. The Westminster Confession
3. The Barmen Declaration
4. The Heidelberg Catechism

"Jesus Christ, as he is attested for us in Holy Scripture, is the one Word of God which we have to hear and which we have to trust and obey in life and in death. We reject the false doctrine, as though the church could and would have to acknowledge as a source of its proclamation, apart from and besides this one Word of God, still other events and powers, figures and truths, as God's revelation."Theological Declaration of Barmen, May 1934

The Confessing Church — Bonhoeffer, Niemöller, Barth and others — refused to let the "German Christian" movement subordinate Scripture to race and nationhood. Barmen became the founding charter of Christian resistance to the Reich and is still used as a confessional document in some Reformed churches today.