The political cartoon The Freedman's Bureau! would best serve as historical evidence to support which of the following conclusions? a. reconstruction was largely a failure because of politicians' unwillingness to fund important projects.
b. white supremacy remained a powerful social force during Reconstruction.
c. The end of slavery led to a decrease in racial tensions throughout the United States.
d. The Freedmen's Bureau allowed many former slaves to lead lazy, unproductive lives.