Which phrase from "Conservation as a National Duty" identifies the intended audience of this source?

The phrase "Governors of the several States" from "Conservation as a National Duty" identifies its intended audience. This speech by Theodore Roosevelt is intended for the governor of the different states of America. He wanted to reiterate that conserving the environment is a national duty which means that they should do something to conserve the environment. It is also the duty of the governors of the different states to ensure that the environment is conserved and well protected.