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The Crusades were a series of military campaigns organised by popes and Christian western powers to take Jerusalem and the Holy Land back from Muslim control and then defend those gains. There were eight major official crusades between...

The Fifth Crusade (1217-1221 CE) was called by Pope Innocent III (r. 1198-1216 CE) with the objective, like previous crusades, of recapturing Jerusalem from Muslim control; only this time the strategy was to weaken the enemy by...

Thomas Cranmer served as the first Protestant Archbishop of Canterbury from 1533 to 1555 and was one of the prime architects of the English Reformation during the reigns of Henry VIII of England (r. 1509-1547) and Edward VI of...

John Calvin (l. 1509-1564) was a French Reformer, pastor, and theologian considered among the greatest of the Protestant Reformation along with Martin Luther (l. 1483-1546) and Huldrych Zwingli (l. 1484-1531). Calvin synthesized the...

The astrolabe is an astronomical instrument used from around the 6th century to measure time and position by determining the altitude of heavenly bodies like the Sun and certain stars. Measurements were taken in reference to the viewer's...

The Florentine Codex is an encyclopedic accounting of life in 16th-century Mexico and an invaluable resource for understanding the exchange between European and Indigenous cultures during...

The First Crusade (1095-1102) was a military campaign by western European forces to recapture the city of Jerusalem and the Holy Land from Muslim control. Conceived by Pope Urban II following an appeal from the Byzantine emperor...

Odo of Bayeux (d. 1097 CE) was the bishop of Bayeux in Normandy and half-brother of William the Conqueror (r. 1066-1087 CE). After the Norman conquest of England in 1066 CE, Odo was given vast Anglo-Saxon estates and made, as the...

The Peasants' Revolt, also known as the Great Revolt, was a largely unsuccessful popular uprising in England in June 1381. The rebellion's leaders included Wat Tyler and they wanted massive social changes...

Saint Thomas Aquinas (l. 1225-1274, also known as the "Ox of Sicily" and the "Angelic Doctor") was a Dominican friar, mystic, theologian, and philosopher, all at once. Although he lived a relatively short life, dying at age 49...