America has never been a perfect place, but since the Civil War, it has been one where most people bought into the idea of the country and supported the institutions that keep it running. People may disagree on politics and culture, but when America was threatened, whether it was 9/11 or World War II, people came together to fight for the country they love, even though the reasons may have differed.

However, it’d be naive to say that sentiment is still as strong as it once was. Since The Great Recession, many people have felt that the vibes are off in America, and polls and research back those feelings. Right around 2012, when smartphones became ubiquitous, there was a considerable rise in the number of people who felt that America was on the wrong track and that racism and sexism were considerably worse than they were just a year before. There was also a big spike in mental illness.

So what happened in 2012? Did the world suddenly become drastically worse overnight, or had our perceptions been changed?

Why does it feel like America is on the decline?

Other developed countries have experienced similar vibe shifts since 2012, but it has hit America the hardest. Economics blogger Noah Smith explains why this feeling of malaise has hit America so hard, and he illustrates it perfectly in a........

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