Facts/Theorys About Wings Of Fire, and maybe a few memes...

This is just a collection of facts and little details I notice throughout the books, if you know a fact don't hesitate to put it in the comments! Votes are also much appreciated!
I don't own Wings Of Fire; Tui T Sutherland does *Spoilers*
The cover has nothing to do with the book, I just thought it was funny and I did not make the meme