From what I can tell it is those pesky Californians that are feeding the rest of you. Yet you have managed to stay united for 240+ years.
Hm...
Well, West Virginia did split away from Virginia at the beginning of the Civil War. Virginia was Confederate and West Virginia was Unionist. We do have pairs of states: North Dakota/South Dakota and North Carolina/South Carolina.
I live at the northern end of the California Central Valley where all the farming occurs. I'm surrounded by it!
Farming in California is quite productive and, yes, we provide a lot of food to other states. But, farming uses 80% of our allocable water and produces just $54B of California's $2.5T GDP. So, for 2% of our GDP, we give up 80% of our water. Does that make sense?
Where does the water go? China! It turns out that Almond production consumes about 1 gallon of water per nut and China is the largest market for California Almonds. So, in effect, we export our drinking water. Does that make sense?
https://newrepublic.com/article/125450/heres-real-problem-almondsApparently, Alfalfa uses far more water, has less value per acre, and grows almost anywhere. It doesn't need to be grown in California. But Alfalfa fields can be left fallow during droughts. Almond trees need to be watered no matter what or they die.
Hence the water wars in California...
The petty cash box at Google probably has more money than farming produces so I'm kind of a proponent of getting rid of farming. Let's build condos! Uh, no, the Sierra Club has just about halted construction into farming areas. We'be been sued into building infill projects, trying to make old buildings into new housing without so much as scratching the heritage building. Separate issue...
But what about the food? Turns out, when we go to the grocery store, everything on the shelves is imported from South America. I don't know where California products go but AFAICT, it isn't California.
Stockton claims to be the Asparagus Capital of the World. They even have a big celebration. But the asparagus on the shelves is from Chile. Apparently, asparagus is a high labor product and labor is expensive so the acreage continues to decine.
https://www.huffpost.com/entry/asparagus-farms-california_n_7029836On the automation note: We do see more advanced machinery used in farming. With better sensor technology, I expect that to increase. There simply must be some way to get the labor out of farming. And get the farming out of California.