Rotation.
Crop rotation is when a farmer changes the crops grown in the same field each year to ensure he gets the best harvest possible by not exhausting the soil of specific nutrients by repeatedly growing the same thing.
Since some of the frontier colonies during this time were free due to the idea of popular sovereignty, some slaves could successfully escape to "free" states and not be forced to return to their home state.
False, look at what has been happening in the US lately. Citizens who ban together have power to change society. Citizens decide who leader are by voting.
Drake dropped his name at the university in Des Moines.
