Laws and legal systems have existed around the world for thousands of years. These rules give a country structure and keep people safe. However, laws can also be challenged and changed. This volume examines the legal system in the United States, navigating its origins, key players, and modern history. It also challenges readers to think critically about laws through discussion questions. Easy-to-understand language, engaging photographs, interesting sidebars, and fact boxes give readers a comprehensive introduction to one of the most important aspects of modern civics.