One of the most important method of improving public transport is
Construction of canals
Metro railways
Construction of high ways
None of the above
The inventor of radio is
Guglielmo Marconi
Johann Gutenberg
J.C Bose
Lohn Logie Baird
The first film was shown in the year
1892
1893
1894
1895
The Television was invented by
John Logie Baird
John Gutenberg
Alexander Graham Bell
The long distance communication was revolutionised by the invention of
Printing machine
Radio
News papers
Telephones
The communication signals are sent to other countries through
Satellites
Radio waves
E-mails
Computers
Quick short messages can be sent through
Letter
Telegram
Speed post
All the above