The burden of proof lies on the person making a positive claim. That's you.
None.
No, I believe in things which I have a logical reason to believe in. I've seen videos of WWII, heard first hand accounts, and seen multi-million dollar monuments. I believe it happened.
The crucifixion, I also believe happened. For similar reasons.
None.
I'm sure many of the events of history "we" consider correct are true. I'm also equally sure any portion of history could be incorrect. If there is more evidence for something there's a greater possibility that it is true.
As for the bible, I'm sure after countless translations and intentional revisions people have distorted the words enough so that some original meanings drastically changed. Do I think Jesus lived and taught? Yes. Do I think he came back from the dead? No. I'm not an expert on the subject, but I remember that there are several conflicting stories about Jesus' resurrection coming from "primary sources."
Win by luck, lose by skill.