Under The articles of Confederation, A. coordination among the states was difficult
B The national government cannot force the states will be its laws
C Congress help both legislative and executive authority
D all these answers are correct

Which statements explain reasons why unconformities occur? check all that apply. rocks along a fault break and move. igneous rock forms at earth’s surface. rocks erode and sediment is deposited. no sediment is deposited over a long time. igneous rock forms between sedimentary layers.