The spread of 24 hour networks during the 1980s and 1990s made the american public more aware of which of these -government intrusion
-tobacco dangers
-humanitarian crisises
-global warming

Twenty-four-hour cable news had an instant appeal with the American public and a dramatic impact on the nightly network ... the three broadcast networks as the most believable TV news source, an honor it has held for more than a decade. The second half of the 1980s and the second half of the 1990s.

Government Intrusion.

Explanation:

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: