-
The first radio station was was KDKA.
-
Earle Dickson invented the first band-aid.
-
After he seen two vehicles crash into each other Garret Morgan invented the traffic signal.
-
James Cummings and a draftsman named J. Earl McLeod made the first designs for the bulldozer.
-
Samuel Shlafrock invented the first instant camera.
-
Robert Goddard invented the Liquid Fueled Rocket.
-
Was the first car invented in the 1920s.
-
Alexander Fleming discovered penicillin. It helped cure sickness.
-
Otto Rohwedder invented the bread slicer.
-
The Queen's Messenger was the first live drama on television.
