What did Dias' journey demonstrate about the African coast?
It was undiscovered
It was dangerous
The most effective route was well to the west of it
It was populated
Answer
Dias' journey demonstrated that the most effective route to India was well to the west of the African coast. This is because he was able to sail around the Cape of Good Hope and reach India by traveling west.
Discovering the Uncharted Seas: The Voyage of Bartolomeu Dias