Many theories have evolved on this Halloween, but the most widely accepted theory is that Halloween is derived from the ancient Gauls celebration called Samhain, which roughly means "End of Summer". This celebration is believed to be the end of the "bright future" (spring and summer) and beginning of "dark period" (autumn and winter). Ancient Gauls believed that on October 31, or earlier in the day of Samhain, the boundary between the real world and the unseen world will be very thin, so the residents can cross into the magical world of our nature.
In celebration of Samhain, usually on the population of ancient Gaul, will hold a big celebration for their ancestors long dead and "invite" them to sit down to eat together, while the spirits or evil supernatural beings who will be evicted from their homes. To further complicate the evil spirits or supernatural beings spreading negative influences in their midst, then the population will use a mask with the ugly face or dress up like supernatural creatures were evil, so that the evil supernatural beings was considered that they should not be harassed and let go with a festive celebration .
