(The Center Square) – A ruling in the Kroger-Albertsons merger case will hinge on how U.S. District Court Judge for Oregon Adrienne Nelson interprets a 1980s-era definition of the grocery industry in the 21st-century marketplace. Post-hearing memoranda were due Sept. 27. Judge Nelson’s decision will address issues of monopoly, monopsony, and the rise of e-commerce. Last month, Cincinnati, Ohio-based Kroger and Boise, Idaho-based Albertsons concluded a hearing before the Federal Trade Commission regarding the government’s August motion for a preliminary injunction to block the two grocery giant…