Answer:
The download does not work. Can you write to here?
Explanation:
If I am correct it must be A: They left many records.
It hurt the south for a while, slave labor was good for the south's economy but bad for competition up north because nobody could find a job if all the slaves worked for free. The removal of slavery cemented this competition-based method into America.
It the chief executive is elected by the people and the executive branch is separate from the legislative branch of government then this would be a "presidential government", although a more accurate term would simply be presidential democracy or presidential republic.
