The origins of Halloween and its traditions

Everyone has heard of Halloween, a national event in the USA where one dresses up in the most terrifying way to beg candy and hold wild parties with friends! But do you know where the tradition comes from and who introduced it to North America? ... ... It all began some two or three thousand years ago with the tribes of ancient Gaul ...
Here is the true story.
Halloween is considered as fabulous event especially when celebrated with friends and strangers.
Trick or Treat is a traditional game played by children, ... and adults who prepare for the sweet and candy-giving orgy!