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In page Huldrych Zwingli:

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The Baden disputation exposed a deep rift in the Confederation on matters of religion. The Reformation was now emerging in other states. The city of St Gallen, an affiliated state to the Confederation, was led by a reformed mayor, Joachim Vadian, and the city abolished the mass in 1527, just two years after Zürich. In Basel, although Zwingli had a close relationship with Oecolampadius, the government did not officially sanction any reformatory changes until 1 April 1529 when the mass was prohibited. Schaffhausen, which had closely followed Zürich's example, formally adopted the Reformation in September 1529.[citation needed]