If a story or recount of an event is passed down by "word of mouth," that means there may be no official document detailing the information. However, the information is still important. Throughout history, certain groups may not have a written history from their lives, so they have passed down stories orally. Readers uncover the complexity of oral history in this volume, since it may have problems if details were forgotten or remembered incorrectly. Full-color photographs accompany accessible text for readers to explore the history of silencing groups without power, and "Consider This" questions help them to think critically about the world before them and around them.