The 15th century saw the first attested use of "Nederlandsch" (Dutch: Netherlandish, Lowlandish) alongside "Duytsch" (the Early Modern spelling of the earlier "Dietsc/Duutsc") as a term for the Dutch language and it would eventually manifest itself as the main ethnonym. From the mid-sixteenth century on, the Eighty Years' War (1568–1648) divided the Low Countries into the northern Dutch Republic (Latin: "Belgica Foederata") and the southern Spanish Netherlands (Latin: "Belgica Regia"), introducing a distinction, i.e. Northern vs. Southern Netherlands, the latter being roughly present-day Belgium.