[SunkenCiv]

Does any country? ;') Each time a new ethnic group migrated in, kingdoms toppled, borders changed, etc etc. Nineveh endured a long while as the capital of Assyria. In its final years it managed to hold off the wolves by alliance. Trouble was, the ally was another potential competitor, and two-on-two became three-on-one. (':

[Fraxinus]

I suspect that the entire anglophone world has a tendency to regard borders as permanent because the borders of those countries have rarely if ever undergone changes.

The British Isles were insulated from the frequent changes in borders that occurred in Europe before 1870. The US has only once (in 1863) had a state's border change, and many of the Eastern states have had permanent borders since the mid 1700's.

Thus many people today tend regard borders as permanent because there have been few if any changes world wide since 1945, and for most English speaking countries since circa 1870, as most of the changes in Africa were of the governments not where the borders of the countries were on the maps.