THE CATHOLIC CHURCH

History of the Catholic Church

See also: History of Christianity
The history of the Catholic Church begins with the teachings of Jesus Christ, who lived and preached in the 1st century AD in the province of Judea of the Roman Empire. The contemporary Catholic Church says that it is the continuation of the early Christian community established by Jesus.[1] Its bishops are the successors to the Apostles of Jesus, and the Bishop of Rome, also known as the Pope, is the sole successor to Saint Peter,[2] who was appointed by Jesus Christ to be the head of the church in the New Testament who ministered in Rome.[3][4] By the end of the 2nd century, bishops began congregating in regional synods to resolve doctrinal and policy issues.[5] By the 3rd century, the bishop of Rome began to act as a court of appeals for problems that other bishops could not resolve.[6]

Christianity spread throughout the early Roman Empire, despite persecutions due to conflicts with the pagan state religion. In 313, the struggles of the Early Church were lessened by the legalisation of Christianity by the Emperor Constantine I. In 380, under Emperor Theodosius I, Christianity became the state religion of the Roman Empire by the decree of the Emperor, which would persist until the fall of the Western Empire, and later, with the Eastern Roman Empire, until the Fall of Constantinople. During this time (the period of the Seven Ecumenical Councils) there were considered five primary sees (jurisdictions within the Catholic Church) according to Eusebius: Rome, Constantinople, Antioch, Jerusalem and Alexandria, known as the Pentarchy.

After the destruction of the western Roman Empire, the church in the West was a major factor in the preservation of classical civilization, establishing monasteries, and sending missionaries to convert the peoples of northern Europe, as far as Ireland in the north. In the East, the Byzantine Empire preserved Orthodoxy, well after the massive invasions of Islam in the mid-7th century. The invasions of Islam devastated three of the five Patriarchal sees, capturing Jerusalem first, then Alexandria, and then finally in the mid-8th century, Antioch.

The whole period of the next five centuries was dominated by the struggle between Christianity and Islam throughout the Mediterranean Basin. The battles of Poitiers, and Toulouse preserved the Catholic west, even though Rome itself was ravaged in 850, and Constantinople besieged. In the 11th century, already strained relations between the primarily Greek church in the East, and the Latin church in the West, developed into the East-West Schism, partially due to conflicts over Papal Authority. The fourth crusade, and the sacking of Constantinople by renegade crusaders proved the final breach.

In the 16th century, in response to the Protestant Reformation, the Church engaged in a process of substantial reform and renewal known as the Counter-Reformation.[7] In subsequent centuries, Catholicism spread widely across the world despite experiencing a reduction in its hold on European populations due to the growth of Protestantism and also because of religious scepticism during and after the Enlightenment. The Second Vatican Council in the 1960s introduced the most significant changes to Catholic practices since the Council of Trent three centuries before.