During Pius IX's reign, what did he NOT formalize?
Religious tolerance
Canonization process
Ritual of Mass
Papal infallibility
Answer
Papal infallibility was not formalized during Pius IX's reign. This doctrine states that the Pope is immune from error when speaking on matters of faith and morals. Although Pius IX was a strong advocate of papal authority, he did not formally define this doctrine until the First Vatican Council in 1870.
The Pontiff's Prowess: Unveiling the Legacy of Pope Pius IX
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