It is more difficult to represent objects or ideas with symbols .
It would be A, if you want an easy way to make sure your answers are right use process of elimination.
Who is Johnson? You have to be more specific please
Answer:
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
When the constitution was written, the signers compromised and decided that at a date 20 years from then, the slave trade would end. this would mean that no more slaves would be imported, however, all slaves already in the states would remain slaves. it would have at least been a step in the right direction. the date was not met, and was merely ignored until the civil war broke out.