Causes & Context
East vs West
Timeline
Doctrinal Disputes
Aftermath & Legacy
100

This empire’s use of Greek language and cultural influence contrasted with the Latin West, contributing to growing tensions.

Byzantine Empire

100

Where is Rome?

West

100

The Great Schism is commonly dated to this year.

1054

100

This Latin phrase for the Holy Spirit ‘proceeding from the Son’ was added to the Nicene Creed in the West.

the Filioque

100

Today, the churches that trace their heritage to the East are commonly called this.

the Eastern Orthodox Church

200

This political collapse in 476 ended the unity of the Roman Empire and separated East and West.

the fall of the Western Roman Empire

200

Where is Constantinople?

East

200

The mutual excommunications of 1054 took place during this century.

the 11th century

200

The East rejected this Western claim that the bishop of Rome has universal jurisdiction over all churches.

 papal supremacy

200

The Western church centered in Rome is known by this name.

the Roman Catholic Church

300

This 1204 event by Western crusaders deepened resentment and is often cited as worsening the divide between East and West.

Sack of Constantinople

300

Which side is Catholic?

the West

300

The Council of Florence attempted to reunite Eastern and Western Christianity in 1439 during this century.

the 15th century

300

This Byzantine-era dispute over the use of religious images (icons) influenced theological tensions between East and West.

the Iconoclast Controversy

300

This famous church in Constantinople was where the bull of excommunication was placed during the 1054 dispute.

Hagia Sophia

400

This act of formally severing communion was issued by both sides during the 1054 crisis.

 excommunication

400

Which side is Orthodox?

the East

400

The mutual excommunications of 1054 were officially lifted by Pope Paul VI and Patriarch Athenagoras I in this year.

1965

400

Eastern churches argued for using this type of bread in the Eucharist, contrasting with the West’s practice of unleavened bread.

 leavened bread

400

This title is used by the Archbishop of Constantinople and signifies his role as ‘first among equals’ in Eastern Orthodoxy.

the Ecumenical Patriarch

500

Western churches used this type of bread in the Eucharist, a practice criticized by Eastern Christians.

unleavened bread

500

Which side used Greek?

the East

500

An earlier 9th-century conflict between Rome and Constantinople is often called this schism.

 the Photian Schism

500

The Western church increasingly mandated this for priests, while the Eastern church generally allowed married clergy.

clerical celibacy

500

The Eastern Orthodox Church continued to follow a model of leadership for the five major patriarchates known by this term.

the Pentarchy

M
e
n
u