Revolution in the 11th Century: Church Reforms & the Clash with Secular Powers Explained

How Did Reforms Like the Gregorian Reform Change Church Hierarchy? | Medieval Europe Uncovered News

Is Medieval Christianity Connected to the Gregorian Reform? | Medieval Europe Uncovered News

What Was Wrong With The Julian Calendar Before The Gregorian Reform In Rome? - All About Rome

The Rise of the Inquisition | Corruption, Cathars & Crusades (Ep. 3)

What Impact Did the Gregorian Reform Have on Church Hierarchy? | Medieval Europe Uncovered News

What Was The Investiture Controversy Related To The Gregorian Reform? - Europe Through the Ages

Boring Story for Sleep : 10 Days Wiped from Time: The Gregorian Calendar Reform Explained

The War of Time - The Epic History of How We Conquered the Calendar

When Did the Medieval Church Lose Its Political Power? | Medieval Europe Uncovered News

From Ius Antiquum to Ius Novum: How Gratian Revolutionized Canon Law

Church in Crisis (Part 7): First Lateran Council (1123 AD) w/ Dr. Alan Fimister

THE GREGORIAN REFORM – The medieval Church revolution and the dream of a papal theocracy

Who Had the Power to Appoint Church Officials Within the Church Hierarchy?

When Did the Church Hierarchy Start Allowing Only Cardinals to Elect the Pope?

Church in Crisis (Part 8): 2nd, 3rd, & 4th Lateran Councils w/ Dr. Alan Fimister

Gregorian Calendar vs. Julian Calendar: The Missing 10 Days Explained | Calendar History