Covering U.S. history from 1865 through the beginning of the 21st century, our guide covers critical aspects of this time period, such as: Reconstruction; American emergence as a world power; global depression and the world wars of the 20th century; immigration, industrialization, civil rights, technology, terrorism—and other issues we still face today. Key events, figures and concepts are concisely explained for this grade range, and callout features illustrate our nation’s westward expansion, as well as New Deal organizations, challenges facing African Americans, and the participants/battles of World Wars I & II.