Introduction of Television at the World's Fair
In 1939, the National Broadcasting Co. (NBC) introduces the electronic television to the American public at the World's Fair in New York City, with a live broadcast of the opening address by President Franklin Delano Roosevelt. After this television was made publicly known and the development of television industry really began to take off.
Lemm, Karsten. "Digital TV Timeline" . Accessed May 12, 2018. https://www.wired.com/1998/09/digital-tv-timeline/