Lincoln wanted to mend the Union by carrying out the Ten percent plan.
Nobody gets refused Health care under the affordable health care act and they also take people with preexsisting conditions like cancer and diabetes
Back then , African American citizen were heavily discriminated by society.
For example, they did not allowed to enter the 'white folks' ' Restaurants. They don't even allowed to enter a same public restrooms as them.
They also doesn't count as citizen and not allowed to vote.
Because since these allows for a "division and labor", the answer would be "enough food" and "large population of non-farmers".
hope it helps jijiji