Where was some of the first evidence of deforestation? how long ago did scientists think it occurred?

The first evidence of deforestation was observed in a period known as the Mesolithic Period. Scientists find evidence of past episodes of deforestation by examining pollen records. The primary cause of ancient deforestation is to clear land for agriculture. Deforestation is the widespread removal of trees and forested areas that can lead to serious environmental issues such as soil erosion and Flooding. 

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.