crush the uprising and blame the suffering on the pope. "When Pope John Paul II kissed the ground at the Warsaw airport he began the process by which Communism in Poland — and ultimately elsewhere in Europe — would come to an end." On later trips to Poland, he gave tacit support to the Solidarity organisation. These visits reinforced this message and contributed to the collapse of East European Communism that took place between 1989 and 1990 with the reintroduction of democracy in Poland, and which then spread through Eastern Europe (1990–1991) and South-Eastern Europe (1990–1992). World Youth Days As an extension of his successful work with youth as a young priest, John Paul II pioneered the international World Youth Days. John Paul II presided over nine of them: Rome (1985 and 2000), Buenos Aires (1987), Santiago de Compostela (1989), Częstochowa (1991), Denver (1993), Manila (1995), Paris (1997), and Toronto (2002). Total attendance at these signature events of the pontificate was in the tens of millions. Dedicated Years Keenly aware of the rhythms of time and the importance of anniversaries in the Catholic Church's life, John Paul II led nine "dedicated years" during the twenty-six and a half years of his pontificate: the Holy Year of the Redemption in 1983–84, the Marian Year in 1987–88, the Year of the Family in 1993–94, the three Trinitarian years of preparation for the Great Jubilee of 2000, the Great Jubilee itself, the Year of the Rosary in 2002–3, and the Year of the Eucharist, which began on 17 October 2004, and concluded six months after the Pope's death. Great Jubilee of 2000 The Great Jubilee of 2000 was a call to the church to become more aware and to embrace her missionary task for the work of evangelization. "From the beginning of my Pontificate, my thoughts had been on this Holy Year 2000 as an important appointment. I thought of its celebration as a providential opportunity during which the Church, thirty-five years after the Second Vatican Ecumenical Council, would examine how far she had renewed herself, in order to be able to take up her evangelising mission with fresh enthusiasm." John Paul II also made a pilgrimage to the Holy Land for the Great Jubilee of 2000. During his visit to the Holy Land, John Paul II visited many sites of the Rosary, including the following locations: Bethany Beyond the Jordan (Al-Maghtas), at