Cuál es la diferencia entre el termino Mesopotamia y Sumeria?

When did paul zoll develop cardiac pacemaker

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

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