Description: The Entrepreneurial Revolution: We are in the midst of a silent revolution a triumph of the creative and entrepreneurial spirit of humankind throughout the world. I believe its impact on the 21 st century will equal or exceed that of the Industrial Revolution on the 19th and 20th . The death knell for brontosaurus capitalism of yesteryear. -- Jeffry A. Timmons (The Entrepreneurial Mind, 1989). Development of Entrepreneurship: Earliest Period- Marco Polo, Middle Ages- Theater, Architectural Works, 17th Century- Mississippi Company, 18th Century- Edison & Whitney, 19th & 20th Centuries- Organize/Operate, Innovation.