In large part, thanks to the media. Back then we had ABC, CBS and NBC to "tell us what was happening" - no FoxNews - no Internet, etc.
"Do not fear the enemy, for your enemy can only take your life. It is far better that you fear the media, for they will steal your HONOR. That awful power, the public opinion of a nation, is created in America by a horde of ignorant, self-complacent simpletons who failed at ditching and shoemaking and fetched up in journalism on their way to the poorhouse."
Thank you, Mr. Twain!