Book excerpt: Learn the details of the Legislative Branch of governement. A True Book: American History series allows readers to experience the earliest moments in American history and to discover how these moments helped shape the country that it is today. This series includes an age appropriate (grades 3-5) introduction to curriculum-relevant subjects and a robust resource section that encourages independent study. This book describes the legislative branch of the United States government, and discusses each of its two parts, how it works, its origins, and notable events in its history, including impeachments and declarations of war.