John and his sons became involved in a threefold movement of Portuguese expansion, comprising the campaign to conquer Moorish North Africa; the movement to explore and conquer the Atlantic island groups to the west and south; and the exploring, trading, and …show more content…
These islands, as well as the Azores and Canaries, had been known to the earlier Middle Ages; they were now rediscovered and exploited by the Portuguese (the Azores ca. 1439), except the Canaries, which fell under the control of Castile. The Cape Verde Islands, much farther to the south, were discovered and settled in 1455-1460. Colonization of these islands was important for the entire subsequent history of Iberian expansion: they provided bases for voyages to the New World and for the development of practices used later in American colonization. More immediately, they brought in returns on capital loans extended by Prince Henry to island settlers.
Meanwhile, the Portuguese involvement in North Africa was proving to be a costly and dangerous undertaking. During Henry's disastrous attempt in 1437 to conquer Tangier, the Moslems roundly defeated the Portuguese and took Prince Henry's younger brother, Fernando, as a hostage against the return of Ceuta. Over the objections of Henry and his eldest brother, Duarte (then king), the royal council refused to make the trade, and Fernando lived out the rest of his days in a dungeon at …show more content…
The Portuguese obtained an ever-increasing flow of gold through trade with inhabitants of the coastal regions and in 1457 resumed minting gold coins. With a coarse African red pepper (malagueta) the Portuguese made their first incursion into the Italian monopoly of the spice trade. However, the most important long-range economic development was the beginnings of the African slave trade, which became significant after 1442. The Portuguese obtained slaves through raids on coastal villages and trade with the inhabitants of Gambia and Upper Guinea. In this way the Portuguese, at the very beginning of Europe's overseas expansion, provided the "woeful solution" for the problem of colonial labor