What was the act of uniformity in 1559?

The Act of Uniformity in 1559 was a key piece of legislation passed by the English Parliament under Queen Elizabeth I. It established the Book of Common Prayer as the standard form of worship in the Church of England, thereby promoting Protestant practices while also seeking to unify religious practices across the nation. The Act mandated the use of this prayer book in all church services and imposed penalties for non-compliance, reflecting Elizabeth's efforts to consolidate her religious settlement and reduce tensions between Catholics and Protestants.