The city that was once a rubber "boom-town" is: são paulo brasília rio de janeiro manaus

The correct answer is D) Manaus

Explanation:

Manaus is a in Brazil and the capital of the State of Amazonas. It was established by Spanish colonists who named the city after the local Manaos people.

While it was a small trading post for the first few centuries, it came to prominence in the mid 19th Century due to its vast rubber resources.

The rubber boom made turned it into a wealthy city when Rubber Tycoons spent lavishly and so did the city government.

However, as demand for natural rubber dwindled, the city gradually went into stagnation until the late 20th Century.

answer; i believe that the correct answer is (tobacco);

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