The entire premise is total fiction and make believe anyway so just go for it and make it up as you go along.

You don't need any facts because there are not any facts to go on.

Just make it believable just in case the world comes to an end and some zombie finds the book and turns it into a bible to run the world with.

Do us a favor and leave out the parts where we are to kill people who are different. I think the last guy was raped by a gay person so he wrote a book about killing them.