<P> In 1958, the CBC completed the longest television network in the world, from Sydney, Nova Scotia to Victoria, British Columbia . </P> <P> Reportedly, the first continuous live broadcast of a "breaking" news story in the world was conducted by the CBC during the Springhill mining disaster, which began on October 23 of that year . </P> <P> The development of cable television and satellite television in the 1970s allowed for more channels and encouraged businessmen to target programming toward specific audiences . It also enabled the rise of subscription television channels, such as Home Box Office (HBO) and Showtime in the U.S., and Sky Television in the U.K. </P> <P> Important people in the development of TV technology in the 19th or 20th centuries . </P>

When did the black and white tv come out