How hard is AP Comparative Government?

Is AP Comparative Government hard? I am really interested in International relations field and it looked pretty interesting to me but is it that hard like AP US Government? And what book is good for the AP Exam?(such as Barron’s, Princeton ,Review, or Kaplan…)

I have heard that AP Comparative Gov was one of the easiest AP exam ever. I don’t know anyone who has taken it since it is such a rare AP, but I would recommend it if you have an interest in majoring in a humanities subject. I have heard that the best review book is published by Ethel Wood.

http://www.amazon.com/Comparative-Government-Politics-Essential-Coursebook/dp/0989539555

His latest edition is cheap and effective. You could also try Barron but I’m not too sure how good it is.