Answer: The answer is A
Explanation: Due to the south relying on agriculture as oppose to industry they developed far slower than Northern regions.
A - The Articles of Confederation
The answer for this question is: <span>the election of Abraham Lincoln as President
Abaraham Lincoln was always known as someone that really see slavery as something that undermines human's value.
Not long after elected as president, Abraham Lincoln made several policies that make it harder for the southern states to keep their slaves, which led to the first secession.</span>
If you are talking about the Revolutionary War, then the British were already an established independent government.
They have a common because they all share a location which can be implemented on maps
