What do you think is the most important moment in mass communication history, an

What do you think is the most important moment in mass communication history, and why? Please use correct grammar and short essay format.
My Answer
I think one of the most important moments in communication is the moment when TV standard signals are converted to digital signals, because digital signals use the wireless spectrum more efficiently than analog signals. Digital broadcasting provides better picture and sound quality while consuming less bandwidth than standard signal.
Feedback:
For your short essay response you needed to build a stronger argument to support the claim that television standard signals being converted to digital signals was the most important moment in mass communication history. You shared some information as to what this allowed, but you did not fully support that it was the most important moment.