Why has the discovery of radio waves changed the world of communication and information?

Radio waves are waves of energy that have the longest wavelengths in the electromagnetic spectrum. The electromagnetic spectrum is a term that refers to all the different sized waves of energy.

Artificially generated radio waves are used for fixed and mobile radio communication,  broadcasting, radar, and other navigation systems, communication satellites, computer networks, and innumerable other applications.

Radio waves radiate away from a point of origin. They are used to transmit signals that are received by the antennae on your television, radio, cellphones, cordless phones etc. in short, radio waves have totally changed society by revolutionizing the world of communication and information.