4. because if other countries deny what happened they do not learn from it and it can happen again 5 look for facts do your own resheach and don't take any information for granted (too late lol)
I found a link:
http://www.ilo.org/public/english/region/asro/mdtmanila/speeches/miworker.htm
Hope this helps! :D
I beleive it began in Oklahoma. Hope this helps!