People who take a "layer cake" view of federalism believe that

a.) state governments are too weak to meet most citizen needs.
b.) state governments are supreme over the national government.
c.) national and state governments must cooperate to meet citizen needs.
d.) national and state governments are exclusively sovereign in their areas.

D.) national and state governments are exclusively sovereign in their areas.

I hope this helps.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

i would say that the politicial parties from state to state varies.