Although the re-discovery of Newfoundland is credited to John Cabot, we know that as early as the 1480s, English ships were venturing into the unknown Atlantic Ocean.
John Cabot may have discovered an ocean route from Europe to North America, but this information did little to clarify the geography of eastern Canada.
The Portuguese pioneered the European exploration of the Atlantic Ocean. Some historians believe that Portuguese mariners reached Newfoundland before Cabot.