There is one two page spread with one main paragraph that covers history from 500-1500 AD. The paragraph mentions the fall of Rome, new kingdoms and the spread of Christianity. Then one line reads "Christians often attacked the followers of other religions, particularly Muslim Arabs who lived in Spain, North Africa and the Middle East." I'm not excusing all the actions of the Crusades, but I'd like to point out that all the listed regions were Christian at the beginning of this time period, before the militant spread of Islam.
ETA: I e-mailed the company yesterday and received this message just now:
Thank you for letting us know about your concerns. This will be forwarded to our editors for reveiw.