when and how was Santa Claus created?

because people not believe the god.

I think it was from Clement Clarke Moore the poem the night before christmas. I think I seen a show about this and it was his poem that really put a face and a deed with Santa Claus. But I think before that, the Germans had a character that was close to it.

Santa Clause came to be, because the whole x-mas holiday never began with the celebration of Jesus's birth. It began as a Winter Solice, that over the years incorparated other traditions from other celebrations. Then the Christains felt they needed a holiday to celebrate their lord, so they took the birthday of the pagan sun god's, Dec.25. So that's how x-mas has Santa Claus along with it.

I didn't know in which book was Santa Claus firstly mentioned