You really are a moron, aren't you? Expensive food is NOT a problem in the United States. In case you haven't noticed, OBESITY is the Number One health problem in America. When is the last time you saw a starving American on TV?
I am getting bored dealing with a lightweight "thinker" such as yourself. Gotta go take the bread out of the oven and take a walk before it rains.
Oh yeah civilizations thrived when food was scarce and expensive./sarcasm
Another concept that eludes this "lightweight thinker" [Dane] is that as long as farmers employ illegal labor at dirt cheap wages there is little economic incentive for industrial companies and inventors to develop automated machinery to replace NO TECH manual labor in agriculture.