"Tratado das Ilhas Novas e Descobrimento dellas e Outras Couzas" is a unique book written by Francisco de Sousa, who was active in the 1570s. In his work, the author describes in detail the discovery of new islands and the acquisition of knowledge about their geography and natural resources. This treatise has become an important source for those interested in the history of great geographical discoveries. The author talks about his travels, meetings with local residents and his impressions of what he saw. "Tratado das Ilhas Novas e Descobrimento dellas e Outras Couzas" is a fascinating book that sheds light on colonial history and helps to better understand the era of the Great Geographical Discoveries.