John locke's theory that certain truths in society come from and are governed by nature is known as the theory

Natural Law

Explanation:

John Locke was one of the famous English philosophers during the early Enlightenment period. He came to be known for his views on Natural Laws. His theory on Natural Rights or Law gave birth to a new doctrine in Europe as well as in America, which included Right to live, Estate, and  Liberty. According to him, rights were given to human by birth. The moral rights and responsibilities that exist between people not be disputed by the government.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain