Containment was a United States policy using numerous strategies to prevent the spread of Communism abroad. The US enter the Korean War to defend South Korea from a communist Invasion and the US adhered closely to containment during the Vietnam war.
Yes, this is because not all information is worth spreading. for example even though trumps wife is the first lady i don't believe that she should have been put on blast that shes in playboys. this information could have been with held. and also personal news like a school fight of a bully report in lets say new York shouldn't be all over the news in Florida. some things are best ether local or not in public news. the only thing that should be spred country wide new trends, or a newly passed law other then that everything is irrelevant .
Lincoln had to deal with not only the challenge of the South seceeding from the United States, but also the challenge of raising an army from Northern States who didn't want to get into a war.
Working for the election of sympathetic public officials