Booking Through Thursday~ Recent Informative

Booking Through Thursday is hosted by Deb

Deb asks:

What’s the most informative book you’ve read recently?

I do have to go back aways to find something truly only about Facts.. just the facts, ma'am.. most of my books teach me something otherwise I'd be bored.
Back in March I read
"After Elizabeth: The Rise of James of Scotland" by Leanda De Lisle (my review) which dealt with the transition from Queen Elizabeth I of England to the reign of James I of England.

That was a good read, not stellar, but definitely informative.