John Muir convinced Teddy Roosevelt that the best way to protect Yosemite Valley was through:
A. Granting land to farmers.
B. Closing off land to visitors.
C. Federal control and management
D. All of the above

To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land