25. Beginning in the 1520s, the Protestant Reformation spread quickly through Zurich and eventually all of Switzerland mainly due to the work of which man?
From Quiz History of Zurich
Answer:
Ulrich Zwingli
Zwingli had long been a critic of the Catholic Church, particularly its influence on the people and allegedly widespread corruption in church management. Zwingli first became known in Zurich in 1522 when he campaigned against the Lenten fast. As Zwingli's influence grew and his views became more popular, he became acquainted with Katharina von Zimmern, who was the abbess of Fraumunster Abbey. As the town officials, influenced themselves by Zwingli, began disestablishing the monasteries, von Zimmern handed the Catholic Fraumunster Abbey to Zwingli, apparently supportive of the Reformation.
It is not entirely well documented what von Zimmern's position on the Reformation was. It has been speculated that she handed the abbey over to avoid a bloody war. However, historical evidence suggests otherwise. The abbess had, for years, allowed Zwingli to preach in the cathedral and in the monastery and in the years afterwards, married a friend of Zwingli's and continued to push the Reformation's ideas in Zurich.