Why are the country borders(other than some African countries) not straight lines?
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Answers
Answer:
If they could not identify an obvious geographic/ethnic barrier, they simply drew straight lines. Most modern African borders were created by colonial powers. When European powers first started controlling territory, the territory would be some land around trading posts. ... They all agreed to not trade in slaves any more.
Explanation:
The western united states came into being long after the eastern (states were added from east-to-west). As such, a bit more time/thought was put into getting them set up with their borders.
In general, there's two types of borders:
natural
man-made/defined
When the border is natural, such as a river, that's the easiest solution, as the river, though windy, is a pretty clear separation of land mass.
When we have to make the borders ourselves, the easiest line to create is a straight one. As such, whenever possible, straight lines were used.
In other words, the answer is: geometry
For a much more detailed history of each state's borders, the History Channel created a series about this very topic:
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