Answer:
As Roosevelt’s Seventh Annual Message makes clear, the concern with conservation was national, not focused solely on the West. The conservation movement had its biggest impact in the West, however, because of the federal government’s ownership of so much land there and its authority over territories before they became states. In 1886, North Dakota, South Dakota, Montana, Washington, Idaho, Wyoming, Utah, Oklahoma, New Mexico, Arizona, and Alaska were still territories. New Mexico and Arizona did not become states until 1912, Alaska until 1959 (along with Hawaii).
Step-by-step explanation: