Our book can't easily be used as a supplement. I guess it could, but that would defeat the purpose of the book. You really need to use A World of Adventure as the only, or main study for the year. It includes daily lesson plans and covers all subjects, except math.
Yes, we believe in a chronological study of history. It just makes sense to do it this way. It's so much easier to understand the Renaissance when you've already studied the Middle Ages. One thing leads to a better understanding of the next.
The first book, A World of Adventure, covers Ancient Egypt, Ancient Greece, Ancient Rome, The Middle Ages, The Renaissance and Reformation, and The Age of Exploration. Roughly covering the years 2500 BC through AD 1600.
The second book, which Dorian is working on now, will cover the colonization of America through the Revolutionary war and the constitution. Roughly 1600 through 1790.
The time frame for the other three books are not set yet, but will probably be something like this:
Book 3 -- Early frontier, slavery, Indians (eastern tribes), gold rush, prelude to the civil war. (roughly 1790-1860)
Book 4 -- Westward expansion, Indians (western tribes), The Civil War and reconstruction.
Book 5 -- W.W.I, the depression, W.W.II
Again, this is a rough outline and may change as things progress.