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Commercial art. Commercial art is the art of creative services, referring to art created for commercial purposes, primarily advertising. Commercial art traditionally includes designing books, advertisements of different products, signs, posters, and other displays to promote sale or acceptance of products, services, or ideas. Skills of commercial art
(December 2010). Commercial law, also known as business law, is the body of law that applies to the rights, relations, and conduct of persons and businesses engaged in commerce, merchandising, trade, and sales.It is often considered to be a branch of civil law and deals with issues of both private law and public law.any countries have adopted civil codes that contain comprehensive statements of their commercial law. In the United States, commercial law is the province of both the United States Congress, under its power to regulate interstate commerce, and the states, under their police power.