Negative environmental impacts from unsustainable farming practices include: Land conversion & habitat loss. Wasteful water consumption. Soil erosion and degradation.
It was challenging because there wasn't many tools then and not a lot of relying resources. As early New England was developing, some crops would die off from livestock eating it, and lack of knowledge of what they were farming. This was some major things in the development of new England's agriculture.
It was in 1947 and they were a bit confused why it happened