The best source out of these options would be : a biography of a chicago family displaced in a fire, because this family wrote the biography and they are the witness and first person in the story.
I hope this helps!
Answer:Vasco da Gama
Portuguese explorer Vasco de Gama becomes the first European to reach India via the Atlantic Ocean when he arrives at Calicut on the Malabar Coast. Da Gama sailed from Lisbon, Portugal, in July 1497, rounded the Cape of Good Hope, and anchored at Malindi on the east coast of Africa.
Since you provide no options, That could be considered an economic Benefit. Using require materials will lead to using less money for the expenditure, which later on could be allocated to fund a more important/pressing matter such as welfare.
hope this helps