An accomplishment of the Lewis and Clark expedition was that it

Who founded the social contract theory of the government

What is the term for a short statement about history that has not been yet been proved

How does the supremacy clause of the u. s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u. s. constitution overrules each state constitution