Ecumenical Councils: Did you mean...?

The Council of Trent (1545-1563) was a meeting of Catholic clerics convened by Pope Paul III (served 1534-1549) in response to the Protestant Reformation. In three separate sessions, the council reaffirmed the authority of the Catholic Church...

Constantine IV ruled as emperor of the Byzantine empire from 668 to 685 CE. His reign is best remembered today for the five-year Arab siege of Constantinople from 674 CE, which the Byzantines resisted thanks to their strong fortifications...

Katharina Zell (also known as Katharina Schütz, Katharina Schütz-Zell, l. 1497-1562) was a reformer, theologian, and prolific writer in Strasbourg who helped establish the basic tenets of the Protestant Reformation without advancing sectarian...

The Byzantine Empire existed from 330 to 1453. It is often called the Eastern Roman Empire or simply Byzantium. The Byzantine capital was founded at Constantinople by Constantine I (r. 306-337). The Byzantine Empire varied in size over the...

The Empire of Nicaea was a successor state to the Byzantine Empire, or rather a Byzantine Empire in exile lasting from 1204 to 1261 CE. The Empire of Nicaea was founded in the aftermath of the sacking of Constantinople during the Fourth Crusade...

Soviets, often called Soviets of Workers' Deputies, were worker councils first formed during the Russian Revolution of 1905 when a general strike was called against the Tsarist regime. Factory and other types of workers across the newly industrialised...

The Index of Prohibited Books (Index Librorum Prohibitorum) was a list of written works condemned as heretical or injurious to the Christian faith by the Catholic Church at the Council of Trent in 1563. It remained in effect until 1966 when...

The Bolshevik Revolution occurred on 7 November 1917 (old calendar 25 October) and established a new republic: Soviet Russia. The Bolsheviks were radical socialists led by Vladimir Lenin (1870-1924), whose goal was a fairer society where...

Anglo-Saxon warfare was characterised by frequent and violent conflicts between petty kings, which ultimately led to the rise of larger kingdoms such as the Kingdom of Mercia, the Kingdom of Northumbria, and the Kingdom of Wessex. In early...

The House of Burgesses (1619-1776 CE) was the first English representative government in North America, established in July 1619 CE, for the purpose of passing laws and maintaining order in the Jamestown Colony of Virginia and the other settlements...