Alfred Marshall (1842-1924) was one of the most influential economists of his generation. His book, Principles of Political Economy (1890) brought together the theories of supply and demand, marginal utility and the costs of production[?] into a coherent whole. It was the dominant textbook in England for a long period.
... Pedro I established the independent Empire of Brazil. This lasted until the next emperor, Dom Pedro II was deposed in 1889 and a republican based federation was ...