National Authority Has Greatly Expanded in the Twentieth Century in Large

National authority has greatly expanded in the twentieth century in large part because

A) local,state,and federal governments have become increasingly interdependent.
B) constitutional amendments have opened the way for wider application of national authority.
C) the state governments have shown themselves to be an ineffective level of government.
D) the Democrats have been in control of Congress for most of the century.
E) Americans like the idea of "big government."