Which is true of the development of western land, timber, gold, and oil? all were abundant, renewable resources.
all had been exploited by native americans for many years.
all had a negative impact on the environment.
all were carefully regulated.

The correct answer is - All had negative impact on the environment.

From the beginning of the exploitation of the western land until present day, it systematically was destroying the environment and had devastating effect on it. The timber industry, gold mining, and oil extraction, all contributed to cleaning up the terrain from the forests. Further on, it polluted the soils, and also resulted in heavy erosion of them.

social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live

sorry i cant