Great Events from History Series
This 31 volume series covers major world events from the Classical period through the 21st century. This general reference work is an excellent starting place. Each entry has a subheadings for key individuals and significance of the event. Great Events is the companion set to Great Lives From History.
Social history explores the changes and continuities in the lives of ordinary people. Note that many of these titles are in the 300s and not in the 900’s! In Dewey, the 300's contain works about groups of people.