Why Washington wanted to secure the Trans-Appalachian West?

George Washington sought to secure the Trans-Appalachian West to ensure American expansion, economic growth, and the establishment of a stable frontier. He believed that control over this territory would promote agricultural development and provide opportunities for landless settlers. Additionally, securing this region was crucial for strengthening the young nation's sovereignty and preventing encroachment by foreign powers, particularly Britain and Spain. Washington viewed the expansion as essential for the long-term prosperity and unity of the United States.