What was Edison's primary achievement celebrated in the text, rather than the initial concept of illumination?

Answer

The creation of a durable, economically viable, and fully integrated lighting system.

Edison's greatest contribution was not the basic concept of electric light, but the development of a complete system, including the practical bulb and the necessary infrastructure to support it economically.

What was Edison's primary achievement celebrated in the text, rather than the initial concept of illumination?
inventionbulbelectricityEdisonfilament