Sudan. It split into north Sudanand south sudan
One part of the constitution that was not the best was how it gave people too much freedom, since people didn't want to eventually form a dictatorship over the colonists.
In political systems that allow and protect this right, the system is able to be altered by the people if they think that it should be. This means that if they disagree with something, they are able to petition it without being harassed or arrested. This can change the political system if the system gets to where the people don’t have rights and they will try and change that.
C. private ownership and free markets
I am going to go ahead and say that your answer is C because regions can end for many reasons and most of which I'm certain of which are affected by the physical characteristics of the region.
I hope that this helps. :)