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.
Crystal City is a city in Jefferson County, Missouri, United States. The population was 4,538 at the estimated 2008 census. It was 4,247 at the 2000 census. Crystal City and its neighbor Festus are often collectively known as the "Twin Cities"; however, they are incorporated separately.