This book is part of a book series called Understanding World History .

This book has been graded for interest at 13-17 years.

There are 96 pages in this book. This book was published 2014 by Referencepoint Press .

Toney Allman has written more than 30 nonfiction books for young readers. She holds two psychology degrees: a bachelor of science from Ohio State University and a master of arts from the University of Hawaii. One of her first assignments as a new graduate student was to observe gorilla behavior in the Honolulu Zoo.