Answer:
Southern governments which wanted to rebuild their cities after the war.
The Republican Congress built up military areas in the South and utilized Army work force to oversee the locale until new governments faithful to the Union—that acknowledged the Fourteenth Amendment and the privilege of freedmen to cast a ballot—could be set up.
These military districts were built up in the southern part of the country and they were built till the time the new government came up in the region and gave the region the right to vote.