John Tyson started taking these from Arkansas north for better prices & the rest is agribusiness
[DOC] [TLE] Bird flu and chicken factory farms: Profit bonanza for U.S. agribusiness [PAR] Nov 27, 2005 ... One of the better known radio ads in the United States in recent years had ... 
Tyson Foods, based in Bill Clinton's home state of Arkansas, enjoyed .... or 
standards for how these animals should be housed, fed, or treated on farms.