John Paul II became the first pope to visit the Republic of Ireland.
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The first Vatican Council, also known as Vatican I, decrees the doctrine of Papal infallibility.
The longest papal reign began when Pope Pius IX was elected.
Pope Paul VI canonized Elizabeth Anne Seton as the first American saint.
An assassination attempt was made on Pope John Paul II.
Over 4 million people pay their last respects to Pope John Paul II.
