Answer:
Allowed the arrest on vagrancy charges of former slaves who failed to sign yearly labor contracts.
Step-by-step explanation:
This happened because the black codes were made to supress every black person living in the United States, they were allowed to arrest a black person literally because they were doing nothing, if they were not slaves, they had to be working in any place if they did not wanted to go to jail, but since black people couln't get normal jobs back then, almost everyone had to be enslaved.