How did president lincoln attempt to silence criticism of the civil war?

Why do you think this exchange happened in a private meeting?

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

Why did federal government use a laissez-fair