Answer:
The introduction of 24 hour channels and especially 24 hour news
Explanation:
Most channels in the early days did not broadcast for 24 hours and would usually end their programming at 7 in the evening. This gradually increased to 9 PM and then 12 0 Clock.
However, 24 hour channels really picked up in the 1990s. CNN was the first television channel to report and broadcast 24 hour news as the first Gulf War started.
This completely changed news coverage forever, as almost every channel followed suit. Today, 24 hour news channels are prevalent all over the world as people have to expect instant news reports.
