Under Johnson's Plan, what did the South have to accept in order to
rejoin the Union? *
O
The South would have to accept the 13th Amendment (abolish slavery).

That they would not be allowed to have representatives in Congress.
Southern land would be given to Northern businesses to sell.

Under Johnson's Plan the South have to accept:

the 13th Amendment (abolish slavery).

in order to  rejoin the Union

Explanation:

To understand this answer we need to remember a few things. First of all, not even Johnson wanted to give land to the former slaves. So the last option incorrect. Second, they did manage to get representatives in congress that would motivate them to rebel in the future. So, they got them. Third, they had to give the right to vote to former slaves as well as to accept the abolishment of slavery.