One of the sailors, Bartolomeu Dias passed the southernmost point of Africa known as the Cape of Good Hope in 1488. He declared it possible to travel to India by going around Africa. The Portuguese were then able to make an immense profit by using their own ships to retrieve the spices.

Answer this question: who sailed to india and returned with spices? Let's give stream of consciousness first:
The relevant information is: The Portuguese were then able to make an immense profit by using their own ships to retrieve the spices.
So, the final answer is The Portuguese.