British economist ALFRED MARSHALL (1842-1924) was one of the most prominent thinkers of his age, and his work influenced half a century of financial philosophy. Though the bulk of his work was completed before the turn of the 20th century, the global ramifications of World War I prompted him to reconsider his theories on international economics, and in 1919 he published the two-volume Industry and Trade. Here, in Volume II, he discusses. . how monopolies and competition impact prices . trusts and cartels in the American and German economies . the decline of class differences and advantages in industrial systems . unions, co-opts, and business federations . and much more.