Commerce is the exchange of goods, services, currency, or any other service or product that holds economic value. Commerce can take place between to companies in the same town or city, or on a wide-scale between different cites, provinces, or countries. States, cities, and towns usually have a voluntary group of people who select projects and business services that will improve the economic in a specific location. The These groups are referred to as a "Chamber of Commerce." Chambers of commerce may also work with corporations and groups in order to stimulate commercial growth. For example, they may work with tourism departments in order to draw visitors to their location in order to bring more income to their location. Chambers of commerce from different locations may also work together in different states, regions, or nations to improve international commerce.