The Era of Cooperative Federalism Was Rooted in the Great

The era of cooperative federalism was rooted in the Great Depression struggles of the late 1930s. How did cooperative federalism differ from the previous era of dual federalism?

A) Cooperative federalism acted as a return to the strict doctrine of state powers.
B) Cooperative federalism increased the powers of the federal government when necessary, but retained basic state powers.
C) Cooperative federalism was an arrangement whereby the state governments were allowed to approve all Supreme Court rulings.
D) The Supreme Court had no authority under the dual federalism arrangement so the state governments cooperatively granted the Court its necessary powers.
E) State supreme courts continued to be the supreme authority in the national government structure.