Antitrust and Trade Regulation laws aim to promote free competition in the marketplace. Agreements or cooperative efforts by two or more entities that affects or restrains competitors is illegal under these laws. The Sherman Act makes illegal any contract, combination, or conspiracy in restraint of trade or commerce and makes monopolies and attempts, combinations, or conspiracies to monopolize illegal. The Clayton Act regulate price discrimination, tying and exclusive dealing contracts, stock acquisition and interlocking directorates.
Shirley is a town in Middlesex County, Massachusetts, United States. The population was 6,373 at the 2000 census. The town has a well preserved historic New England town center and is home to two state prisons, including the Souza-Baranowski Correctional Center. The remains of a Shaker village are located on the prison grounds.