In recent years we appear to have adopted this American sales date in the UK. I cannot speak for the rest of Europe. Like Halloween, which was nothing years ago in the UK, this has grown enormously.
The common factor is commercialism. Anything that can help retailers make a profit must now be exploited. Research has shown that retailers often raise prices in the months before Black Friday so we think we are getting a real bargain in the Black Friday sales. I expect there are some exceptions, but do not be fooled. This is ultimately about making profits over a longer period and selling more Black Friday and Halloween merchandise.
As a child I had never heard about Halloween "trick or treat". In my view both Black Friday and making profits from Halloween both stink.
