It's all ag and oil. There's a letter framed on a courthouse wall in one of those shit hole towns. It was written in the 1800's from Chicago's city council asking for a loan.
"They described Chicago, then a village, in glowing terms. But the loan was not granted. The local bank refused it on the ground that the village of Chicago was so far from Shawneetown that it could never amount to anything."
...Pop. (circa 2020) 1024
I've spent way too much time over there. It's depressing as shit.. Even in the larger towns. Bloomington/Normal is only held together by State Farm and they've been trying to move everyone to Dallas for years as they know they can't get anyone to come work there. Chicago is the only thing that state has going for it. Without Chicago that state is Mississippi. Peoria is a dump. It's a terrible place. Ask @mcmurtry66 what the Illinois side of STL is like
Yes they have great AG. And it's dominated by the same families that owned everything for years. Everyone else is meth addicts. Literally only places that are nice are up near the Wisconsin border
The only things worth visiting outside of Chicagoland are Galena, IL and Shawnee National Forest.