Beyond the vast one coffee production that was exported, Is Joo Landmarks also had great importance for the metropolis, Rio De Janeiro, which supplied with products as rice, fabric, maize, indigo, aguardente, birds, pigs, sugar among others agricultural articles. With the proximity of the abolition, the region started to lose its economic importance, therefore, the hand of workmanship used in the production of the coffee, main Brazilian product at the time was exactly the slave. In 1873 Joo had about 7.810 slaves in Is Landmarks, falling for 3.064 in 1887. Passed ' ' boom' ' cofee tree, the region entered in process of economic decay, surviving through small productions for internal consumption and regional exportation, beyond cattle the extensive one. The 15 of August of 1890, Are Joo of the Prince were raised the category of city, with the denomination of Are Joo Landmarks, removing Are Joo of the Prince, to erase the souvenirs of the monarchy.
Unhappyly, some years later, the city started if to weaken. Its decay was in such a way politics how much economic and these factors had finished leading to a population weakness. Between 1898 and 1922, the number of inhabitants fell of 18.000 for 7.400. The region passed if to more come back each cattle time toward extensive and the horticulture. Many commerce if had closed and the transit of the railroads also diminished. Without conditions to carry through new infrastructure services and, less still, to conserve roads, the isolation of Is Joo Landmarks increased. Beyond factors as the fall in the coffee production and the sprouting of new roads, that made with that the number of people who passed that way diminished considerably, the presence of the Light, as it will be shown in the referring chapter to the destruction, was another responsible factor for the decay of the city and its consequent annexation to the River Clearly, that if it gave through decree 635 of 14/12/38.