Which result completes this diagram ? A. ratification of a suffrage amendment B. passage of prohibition legislation C. building the transcontinental railroad D. expansion of labor unions

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