the historical situation of the court ruling described in the excerpt could best be used to support which of the following claims of amrican americans during the late 1800s

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?

When president johnson vetoed a law that would extend the freedmen’s bureau, congress reacted by supporting the veto and closing the freedmen’s bureau. writing a new law to show support for the black codes. overriding the veto and expanding the agency’s powers. drafting a law to prevent african americans from voting.

Brainliesttt !me : ) why were the eastern european countries attempting to break free of the soviet union?