22. Ulysses S. Grant (1869–1877)
Grant led the North to victory in the Civil War, but he received low marks for his administrative skills once he assumed the presidency. He is credited for having rebuilt the U.S. Navy that lagged behind other world power navies at the time, such as Great Britain and Spain.
21. John Quincy Adams (1825-1829)
For his moral authority, Adams ranked highest. He served and faced a contentious Congress during great division in the country but fought hard for civil liberties and unification.