Cornwallis was defeated at yorktown because:
his troops were wounded and sick
french and american ships kept relief forces from arriving
greene had followed him from north carolina
his position near chesapeake bay was hard to defend

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