Each topic is presented on a two page spread in chronological order, and whilst this is good for general interest reading, it limits the books use as any kind of serious reference text as important subjects are effectively brushed over.
One thing about this book which does stand out is the quality of the ilustrations, particuarly the maps and diagrams, which are generally excellent.
Expect a reasonably good general history text that is nice to browse, or good for older children; but for more specific applications a more serious book may be in order.