How has the radio and television improve over time or does radio and television still exist

The radio had enabled a better transmission and reception of the sound that was being sent. It changed the sound of it to a better clearing of the sound due to the technology they discovered. During 1919 the University of Wisconsin-Madison radio station was the first to ever to broadcast the first human speech.

the correct answer on edgen is:

(c.) prevent the spread of communism.

i just took the test.

the last day of school because i didn’t have to go to school the next day