Ok, this was hugely entertaining. However, there are a few things that need to be pointed out.
First, it is always easier to find fault in others than in oneself. While slavery is indeed bad in any form, the way the Tortall vs. Carthak culture is set up seems rather preachy. Why is one culture considered superior to the other? Is Tortall really an ideal country with perfect citizens leading perfect lives? The answer is no. So, why is there a sense of a good Tortall and a bad Carthak?
Second, there is a sentence that seems really strange. When Diane meets Kaddar, she describes him as a "light-skinned black, with thin lips and long, thick eye lashes, dressed in a calf-length tunic of crimson-silk." The term "light-skinned black" is quite odd and stuck in my mind until the end of the book. I think a more appropriate description could have been "he was a black man" or "he was dark-skinned." Am I being too politically correct? I don't think so. It's just an unusual way of describing someone.
Third, what about the preservation of architecture and imperial records? Not to mention all those ancient and valuable fossils. It's a pity that they were all destroyed.
Finally, after all the destruction, Diane goes back home without even a slap on the wrist. It's irritating how it seems that the entire country of Carthak is apologizing to Diane for the actions of one crazed and power-hungry man.
I have a great passion for books that incorporate significant concepts and explore them in a manner that can be detached from real life yet still have a connection to it. This particular book offers us a peek into the institution of slavery and the efforts involved in bringing it to an end. Additionally, we witness how arduous achieving peace can be between different countries with distinct social structures and beliefs.
I truly adored the small scenes between Diane and Alanna. It is these little details that link the stories together, construct the world, and make it so much more vivid and rich.
I am certain that it is addressed in a later series within this world, but I do wish that at some point someone had delved into more detail about how the emperor became the person he is now. I find it hard to envision that he began as completely evil.