Dietary fiber or roughage is the indigestible portion of food derived from plants. It has two main components: 1  Soluble fiber, which dissolves in water, is readily fermented in the colon into gases and physiologically active byproducts, and can be prebiotic and viscous.ietary fiber or roughage is the indigestible portion of food derived from plants. It has two main components: 1  Soluble fiber, which dissolves in water, is readily fermented in the colon into gases and physiologically active byproducts, and can be prebiotic and viscous.
The Portuguese were the first to engage in the New World slave trade in the 16th century. Between 1418 and the 1470s, the Portuguese launched a series of exploratory expeditions that remapped the oceans south of Portugal, charting new territories that one explorer described as oceans where none have ever sailed before.
The history of Portugal dates back to the Early Middle Ages. In the 15th and 16th centuries, it ascended to the status of a world power during Europe's  Age of Discovery  as it built up a vast empire, including possessions in South America, Africa, Asia, and Oceania.ing John V of Portugal, however, was not pleased and recalled Melo to Portugal in 1749. John V died the following year and his son, Joseph I of Portugal was crowned. In contrast to his father, Joseph I was fond of de Melo, and with the Maria Anna's approval, he appointed Melo as Minister of Foreign Affairs.