For 10 points, name this resource that undergoes vulcanization to become even more elastic.
In some areas, the production of this natural resource also leads to the production of the eta fruit. Nicholas Ridley promoted the production of this natural resource in Asia. The plants that produce this resource were first commercially exported by Henry Wickham, who grew them in Ceylon. In the early 20th century, American industrialists created a colony to produce this product, which became known as "Fordlandia," but it was wiped out by a leaf blight that now prevents this product from being commercially grown in its native South America. In Africa, this product was harvested from a vine, and often required the harvester to cover himself with this product. Along with ivory, this product was produced through forced labor in the Congo Free State. Before entering commercial use, this resource is heated and mixed with peroxides, bisphenol, and sulphur. For 10 points, name this resource that undergoes vulcanization to become even more elastic.
In some areas, the production of this natural resource also leads to the production of the eta fruit.
rubber [or latex]