Manaus, which already boasted as the capital administrative of the State, experienced a great population growth and the economic advancement, resulting mainly from exports of raw materials until then exclusively from Amazon Region. With the wealth generated by the production and export of natural rubber ("Hevea brasiliensis"), the amazonian capital received large works such as the port of Manaus, the Amazonas Opera House, Palace of Justice, Reservoir of Mocó, the first network of electric energy and public transport services as trams. Vista as a reference, your headquarters became a symbol of prosperity and civilization for the Amazonas State, being the center of important artistic and cultural events. Bloomed so trade in luxury products and superfluous, with men and women from all over the world parading its streets and avenues, at purchase of the so-called ""black gold"", as was dubbed the natural rubber, to resell big profits in the main capitals of Europe and in the United States from 1910, difficult times began, due to the strong competition of natural rubber planted in rubber plantations the Asian continent, to European and American markets with superior advantages, which ultimately enact bankruptcy of Amazonian economy.