B. The violence in the South was increasingly disturbing and seemed to indicate that blacks would never really be free.
Answer:
enforce regulations passed by the legislature
Explanation:
The main difference between presidential reconstruction and Congressional reconstruction was that presidential reconstruction was much more lenient toward the South.they were practically angry because the South instituted the "black codes"that treated the freed slaves harshly."
This should help try not to copy word from word but this explanation sums it up
