(HELP ASAP) The Arab tradition of the Green Sea of Night had too strongly taken hold of Christian thought to be easily shaken off.
And it was beyond the Cape which bounded their knowledge that the Saracen geographers had fringed the coast of
Africa with sea-monsters and serpent rocks and water unicorns, instead of place names, and had drawn the horrible
giant hand of Satan raised above the waves to seize the first of his human prey that would venture into his den. If God
made the firm earth, the Devil made the unknown and treacherous ocean-this was the real lesson of most of the
medieval maps, and it was this ingrained superstition that Henry found his worst enemy, appearing as it did
sometimes even in his most trusted and daring captains.

in one to three sentences, describe some of the possible rewards from the voyages that the Portuguese made during this time.