With the addition of th 15th century and mid-20th century, I have a few more historical tools for examining different peoples. The beginning development of particular changes, Abrahamic religion, and particular families; Performing arts and philosphy; and more areas of Anthropology also are elaso extending the bag of techniques.
An outline for the history of Western civilization is starting to come together without quite so many serious gaps. North American Anglic peoples how have an introductory entry. I've also added Southern Africa and Central Africa, and South American Indians and North American Indians, which gives a complete set of the major areas of the world.