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.

the correct answer is =   british soldiers attacked and killed five boston townspeople.

yellow fever and other tropical diseases