The use of writing by the Guarani Indians was stressed after the Treaty of Madrid, in the year 1750. In the face of the South American territory exchange by the monarchies of Iberia, the literate Indians of the missions gave new applications to the use of writing. In this occasion, the epistolary contacts were truly valued by the Guarani Indians. The indigenous decision express their opinions in the written language expresses, on one hand, the importance in script negotiations had, and on the other, the knowledge of the administrative practices of the Spanish Empire. In the XVIII century, the literate Guarani Indians wrote frequently and, sometimes, even more skillfully than the Spanish American settlers.
Guarani Indians; missions; indigenous textual forms.