Sherman Antitrust Act – 7/2/1890

The Sherman Antitrust Act of 1890 was the first measure passed by the U.S. Congress to prohibit abusive monopolies, and in some ways it remains the most important.


Monopoly is a term used by economists to refer to the situation in which there is a single seller of a product (i.e., a good or service) for which there are no close substitutes. The word is derived from the Greek words monos (meaning one) and polein (meaning to sell).Governmental policy with regard to monopolies (e.g., permitting, prohibiting or regulating them) can have major effects not only on specific businesses and industries but also on the economy and society as a whole