The use of block grants, allowing states considerable leeway in how federal money is spent, was championed by president under the name new federalism. a. hoover b. nixon c. wilson d. mckinley

B. President Nixon

Under the Nixon Administration, the United States government enacted many policies labeled as the New Federalism policies that aimed at reinstating state power's from the federal government, this included the use of sweeping block grants. 

4.a depression is the answer