Food and agriculture supports $10.4 trillion in total U.S. economic output, representing about 20% of all economic activity. The sector supports nearly 49 million jobs, or roughly 30% of total U.S.

When asked how they identify their social class 54% of Americans said they belong to the middle class, according to one survey.

The middle class is at the center of the changing shape of the economy. Here’s what you need to know.