In what years did the Second Vatican Council occur?

The Second Vatican Council was an ecumenical council of the Roman Catholic Church that took place from 1962 to 1965. This significant event was convened by Pope John XXIII with the aim of addressing relations between the Catholic Church and the modern world. It resulted in landmark changes and reforms in various areas, including liturgy, ecumenism, and the Church’s engagement with contemporary issues.

The years 1962 to 1965 are particularly important as they mark the sessions of the council, where bishops and theologians from around the world gathered to discuss important doctrinal and pastoral matters, culminating in influential documents that continue to shape the Church’s approach today. This council is widely recognized for its emphasis on dialogue and renewal, which had lasting effects on the Church's practices and its relationship with other Christian denominations and non-Christian religions.

The other options represent timeframes that do not align with the dates of the Second Vatican Council and are associated with different events in the history of the Church or the broader socio-political landscape.