Accuracy and facts (Re: Dates and Dating of Christian Events)

1 - What are the facts of "the crucifixion." Can you tell me if there is any evidence (documents etc...) dating to the date of "jesus's crucifixion" and not hundreds of years after?2 - When was the bible written?
3 - When was christianity created?
4 - What was the first "popular" religion?
5 - What were the beliefs of early judaism?6 - How can "believers" refute the evidence of the existence of Homo habilis, Homo sapiens, Cro-Magnons and so on? (Please include the idea of Adam and Eve if you can)