Leviticus

I'm sorry. I do not understand this.

reading languages

Now it's your turn to provide some proof.

the difference is between christianity and all of the others

You seem to be avoiding discussing Leviticus and his prohibitions.

all through out history, it is known across the world, that to appease God for our sins we need to offer blood

Not according to Buddism, and not if you don't believe in God.