"The History of the Act of 1787 and the Old Northwest Territory: A Supplemental Textbook for Schools" is a work that examines a key piece of legislation in United States history that laid the foundation for the development of the country's West. The author invites readers to study the events that preceded the adoption of the Act of 1787 and the consequences it had for the formation of new territories and principles of governance. This book helps students gain a deeper understanding of the importance and impact of this law on the later development of US history. With clear explanations, interesting facts, and a pedagogical approach, "The History of the Act of 1787 and the Old Northwest Territory" will be an important source of knowledge for students and teachers interested in the history of the United States and the formation of its legislation."