there are many reasons as to why indigenous tribes have been forced out of the rainforest, including the construction of roads, logging, the creation of ranches, plantations and resivoirs
most displaced peoples have ended up in towns or cities and few have adjusted to this environment and addiction to drugs and alcohol has been common
once any part of the tropical rainforest is cleared, the thin topsoil is quickly removed due to the heavy rainfall, once the topsoil has been removed there is not much of a chance of anything growing there again
gold mining often goes on in the rainforest, which leads to river pollution, the mercury used to separate the gold from the ground is often allowed to enter the rivers which can impact the structure of life dramatically