Logo: a Positivist train

Question SA-14. Here is the text reference (p. 143/4):

Positivism was especially strong in the larger and richer countries of Latin America. In Mexico it formed the intellectual and ideological base of the 34 year long dictatorship of Porfirio Díaz, who neglected his own lower classes and provided all kinds of facilities to the foreign investors, thus setting the stage for the 1910 Mexican Revolution. In Brazil Positivism was a key element in bringing down the Empire and in creating a Republic led by technocrats and military officers; when their leaders designed the Brazilian flag they placed in its center the Positivist slogan of "order and progress". In Chile Positivism was the driving force behind the development of the mining industry, especially copper and nitrates. In Argentina British-financed railways fanned out from Buenos Aires into the fertile pampas, extracting the bountiful grain and beef.