Pope Leo X: Did you mean...?

Built in the seventh century BCE, the ancient city of Byzantium proved to be a valuable city for both the Greeks and Romans. Because it lay on the European side of the Strait of Bosporus, the Emperor Constantine understood its strategic importance...

Statue of St. Gregory the Great in the Oratory of St. Barbara on the Caelian Hill, Rome.

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 government of the Byzantine Empire was headed and dominated by the emperor, but there were many other important officials who assisted in operating the finances, judiciary, military, and bureaucracy of a huge territory. Without elections...

Pope Francis is facing calls to rescind a centuries-old policy called the ‘Doctrine of Discovery,’ stemming from a series of edicts, known as papal bulls, dating back to the 15th century, which states that white European nations "discovered"...

The Great Palace of Constantinople was the magnificent residence of Byzantine emperors and their court officials which included a golden throne room with wondrous mechanical devices, reception halls, chapels, treasury, and gardens. In use...

Martin Luther (l. 1483-1546) was a German priest, monk, and theologian who became the central figure of the religious and cultural movement known as the Protestant Reformation. Even though earlier reformers had expressed Luther's views, his...

Matilda of Canossa (c. 1046-1115), the Countess of Tuscany (r. 1055-1115) and Vice-Queen of Italy (r. 1111-1115), was the final head of the noble House of Canossa following the deaths of her father in 1052 and her elder brother in 1055. One...

Constantine VII was Byzantine emperor from 945 until 959 CE. Sometimes known as Constantine Porphyrogennetos because of his birth in the purple chamber of the royal palace, he was served by various regents from 912 CE until reigning in his...

Exsurge Domine (“Arise, O Lord” in Latin) is a papal bull issued 15 June 1520 by Pope Leo X (served 1513-1521) condemning Martin Luther’s 95 Theses as heresy along with any other works by Luther or those who supported him. Luther burned the...