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.
1846 - Danish governor proclaims emancipation of slaves in Danish West Indies, abolishing slavery . 1848 - France abolishes slavery . 1851 - Brazil abolishes slave trading . 1858 - Portugal abolishes slavery in its colonies, although all slaves are subject to a 20-year apprenticeship 1861 - Netherlands abolishes slavery in Dutch Caribbean colonies 1862 - U.S. President Abraham Lincoln proclaims emancipation of slaves with effect from January 1, 1863; 13th Amendment of U.S. Constitution follows in 1865 banning slavery