World War I is known as the “war to end all wars.” In this title readers will learn about the events leading to WWI. European countries harbored deep distrust for one another, and this book breaks the feelings down by empire. The chain reactions are clearly laid out to summarize the violent events that lead to WWI. Aligned to Common Core Standards and correlated to state standards. Abdo & Daughters is an imprint of Abdo Publishing, a division of ABDO.