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.
Wall is a town in Pennington County, South Dakota, United States. The population was 818 at the 2000 census. The town is most famous for Wall Drug Store, which opened as a small pharmacy during the Depression but eventually developed into a large roadside tourist attraction.