PLEASE HELP ASAP 1864 congress passed_to reenter the union states must:
have_

Wade-Davis Bill; 50% of WHITE male population had to take a loyalty oath to the union.

Explanation:

The Wade-Davis Bill was passed after the Civil War, to get Southern states to come back to the Union.

{I am 95% sure this is correct}

the use of email to replace slower surface mail.

the answer is expolration. hope this !