Susan Wise Bauer talks about the importance of language and trying to objectively look at world history.
I picked up Bauer’s Well-Trained Mind: A Guide to Classical Education at Home when my youngest was born. She also wrote The History of the Ancient World: From Earliest Accounts to the Fall of Rome. Both are excellent works.
I hope to read The History of the Medieval World: From the Conversion of Constantine to the First Crusade this summer. http://www.amazon.com/History-Medieval-World-Conversion-Constantine/dp/0393059758/ref=ntt_at_ep_dpt_4