By the turn of the 19th century, the production of latex from the rubber tree had become an important economic activity in the Amazon region.
लेकिन 19वीं सदी के आते - आते पेड़ों से मिलनेवाले रबर का कारोबार ऎमज़ॉन इलाके में बहुत मशहूर होने लगा ।