Origins of Haloween.

Halloween was celebrated on October 31st. In this night ghosts, witches and fairies go around the town. Nobody know the origins of Halloween, but what we know is that Halloween is a Pagan Celtic festival. In this day British people wear dresses and go to parties. Children visit houses and ask "Trick or Treat" and if people don't give them chocolate or money, they play a trick to them. A symbol of Halloween in "Jack o' Lantern", a pumpkin with a candle inside, that normally, people put outside their houses for scare evil spirits away. 

HISTORY OF HALLOWEEN
The Celts believe that in this night some spirits arrived on the earth and human don't see them.
So the Celts build bonfires and danced around the fire to frighten them. This night is called "Guy", because Guy is considered James, that in 1605 tried to murder the king, but he was discovered and executed.