ABSTRACT
During the first century A.D., the Celtic people inhabited Gaul, Great Britain, and Ireland. The Roman Empire started its invasion of northeastern Europe around 50 B.C. The Gaul was invaded and occupied by Julius Caesar, in 52 B.C., and the Romans soon imposed their own system there. The Emperor Constantine, driven by political interests, converted to Christianity and was appointed the head of the Catholic Church. The Church deviated more and more from its principles and values, giving rise to a growing immorality, culminating in the ignominy of the inquisition. The priests were instructed by the Pope to sell indulgences and favoured believers were informed that their place would be guaranteed in heaven provided money was given to the Church. The Church preached that the sacred places of Palestine had to be conquered by the Christians and, with the crusades, the Church would be able to recover the Christian relics.
