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The origins of Halloween Halloween is celebrated in many parts of the (0)________ (WEST) world, and is a time when people dress up as witches or ghosts, and go "trick-or treating". It is (1) _________ (DOUBT) one of the most popular traditions in the United States and Britain. The celebration (2) _________(ORIGIN) about two thousand years ago with the Celts. These people were the (3) ________ (INHABIT) of an area that includes Britain, Ireland and Brittany. They relied on the land for their (4) _______ (LIVE),  and this meant that they were at the mercy of (5) ________ (PREDICT) weather conditions, especially during the winter. The Celtic new year began on 1st November, which also marked the beginning of winter, a period (6) _________ (TRADITION) associated with death. On the eve of the new year, it was believed that the barriers between the worlds of the living and the dead were (7) ________ (TEMPORARY) withdrawn, and it was possible to communicate with spirits. The Celts believed that the spirits offered them (8) ________ (GUIDE) and protection, and the Druids (Celtic priests) were (9) _________ (REPUTE) able to predict the future on this point. When the Roman completed their (10) ________ (CONQUER) of Celtic lands, they added their own flavour to this festival. The advent of Christianity brought about yet other changes.