What did zwingli do?

Ulrich Zwingli was a Swiss Protestant reformer who played a key role in the Reformation in Switzerland during the early 16th century. He is known for his emphasis on scripture and his rejection of certain Catholic practices, such as the Mass and the veneration of saints. Zwingli also promoted the idea of a more personal faith and was instrumental in establishing the Reformed tradition, which influenced later reformers like John Calvin. His efforts led to significant religious and social changes in Zurich and beyond.