Uncover the reasons behind the Civil War. See how the United States became an economic power, attracting millions of immigrants in search of a better future. Find out about the World Wars, the Communist regimes that flourished during the 20th century, and how they ended. Look at today’s major issues, such as global warming, poverty, and advances in science and medicine. With more than 700 photographs, maps, timelines, and historical documents, this volume brings the last 150 years to life in vivid detail.