I believe the answer is: Formal region
Each formal region would be differentiated by their own unique government structure that separate each region with the other. Each border on the sides of each region would consist of some sort of boundaries ( could be natural or human made) that accepted by all regions as a legal separation between their jurisdiction.
I would say they reproduce sexual or asexual.
If it’s wrong I’m sorry
Answer:
In October 1781, the war virtually came to an end when General Cornwallis was surrounded and forced to surrender the British position at Yorktown, Virginia.