The city of iquitos formed along the amazon in 1910 in response to the boom of what industry?

The city of Iquitos formed along the Amazon in 1910 in response to the rubber boom.

Explanation:

Iquitos is the largest metropolis in the Peruvian Amazon, and is the seventh most populous city in Peru with a population of 479,866 inhabitants.

It has been one of the major cities, along with Manaus and Belem in Brazil, of the huge Rubber Rush (1880-1914). The rubber rush experienced its peak between 1879 and 1912, experiencing, sometime later, a revival between the years 1942 and 1945. The discovery of vulcanization and the pneumatic chamber in the 1850s led to a extractive rubber fever.

mostly drug tunnels for drug deals etc.