Encapsulating in brief explanations the most important people, places, things, events and ideas in the history of mankind, this educational resource features hundreds of items, many accompanied with photographs or diagrams to help provide additional information. Every entry is explained fully with a description intended to remain brief, but detailed. Running in length from 100 to 300 words, each entry is easy to read, using everyday language to explain items instead of fancy, rarely used words that appear to show off the writer's vocabulary. The featured categories include art, culture, and pastimes; science, technology, and life; history; the world and its wonders; religion, philosophers, and ideas; and trailblazers.