What is Christmas?

[greenmagick]

Hello.

I'm sorry if this is an awkward question but I don't understand this Holiday. I'm not used to celebrating anything and I'm not sure what I'm suppose to be doing or if I should be doing anything at all.

Are there traditions?
Is that why everyone is wearing red and white?
Where did the holiday come from?
Are there any plants associated to this holiday?
Why are there letters to this man named Santa Claws?
What do people ask for?
Are we supposed to give gifts or receive them?
Do all worlds have this sort of holiday?
What is Christmas?

[The writing trails off slightly as if she's been interrupted.]

Thank you for any help.

-Terra Branford.