Вставьте артикль если нужно ! ! the most recent development has been electronic means of communication ,including the wireless telegraph,radio,phone and television. invention and use of electronic means has solved mentioned above..they are most effective methods of communication .people will certainly try their best to invent even more modern and useful methods.

The most recent development has been .the.. electronic means of communication, including the wireless telegraph, radio, phone and television. The invention and use of electronic means has solved all. the ..problems mentioned above..They are .the.. most effective methods of communication . People will certainly try their best to invent even more modern and useful methods.