Definition
Vatican II, or the Second Vatican Council, was a major meeting of Catholic leaders from 1962 to 1965, convened by Pope John XXIII. It aimed to modernize the Catholic Church and address its relationship with the modern world. Key outcomes included allowing Mass to be said in local languages instead of just Latin, promoting greater ecumenism (unity among Christian denominations), and emphasizing the role of laypeople in the Church. Vatican II brought about significant changes, making the Church more accessible and relevant. Think of it as a massive software update for the Catholic Church.