With they are valid was common that the blacks arrived lean, weak and with a bad appearance, and to facilitate the sales of the merchandise was important to improve its aspect. They existed two forms of sales of these blacks an age private sales and to another one they were public auctions. The auctions that generally happened in the ports, were made with just-fond slaves, fifteen days after the landing. It was started with, the difficults of sales and later prettiest of the lot. In 1612 a slave cost 28 a thousand kings on average. A slave for the escravocratas was a good one negotiates or investment.
In the auction the slave had the price established for it launches high more what he characterized this modality. In the private sales of slaves the modality assumes that it had a previous agreement between the salesman and the purchaser, where in an agreement the price was fixed, and also allowed flexibilities in the necessary business if. With urban development of Brazil this modality of commercialization of slaves grew, therefore it passed to have necessity of man power in the construction, the transport and the commerce. Brazil had headquarters of arms for the work in the field the northeast and the centers you read of the colony had established its wealth on the massive production of some primary articles of exportation, amongst which the sugar cane-of-sugar was for much time the product king, over all in the littoral areas. The sugar agricultural exploration rests originally on the ownership of some land areas granted by the Portuguese crown to that they prove capacity to make to bear fruit them: they are the sesmarias. The concessionaire will have to mount whatever the cost a system of efficient production is not enough plantar and spoon fulfills in transforming the harvest into consumption articles: the sugar.