#2 The reason why orange and black are the colours that symbolises Halloween is that orange represents harvest and Black symbolises the death of summer!
#3 It was believed that Halloween was the only day when the boundary between the living and the dead was blurred, so humans would dress-up so that the spirits wouldn't recognise them!
#4 Halloween originates from Ireland, but during the potato famine, people moved to America for a better life. This is why the Holiday is so big in America!
#5 Halloween may have originated since 4,000 BC