Halloween ____________ as the ancient Celtic _____________ called Samhain. The Celts (the _________ from Gaul and Great Britain) believed ________ spirits would try to possess _________ people. They also believed that __________, ghosts and other ________ spirits roamed the land __________ on this night. To __________ away the spirits, people dressed in __________ , lit bonfires, and placed jack-o-lanterns and other scary _____________ in front of their homes.