An amazing conclusion to the trilogy! Exactly the high quality I’ve come to expect when I see N.K. Jemisin on the cover. The fantastic world building begun in the first two books is continued and it all comes to a very satisfying conclusion. 
In this book I saw comparisons between the societies of this world with our real world, especially in discussions of oppression of races. This was skillfully done; not heavy handed but unmistakable.