Britian became an empire because of its 4000 miles of navigable rivers that are accessible from the sea. Jared Diamond overlooked the fact that Africa has very few navigable rivers with access to the sea. It has nothing to do with it running latitudinal. The DRC is 10 times the size of GB but they're landlocked.That would make the British empire "supporting evidence", not "proof".
But the fact is that the UK, being geographically separated, avoided Europe's debilitating problems and is the exception, leaving Diamond's premise falsified, not supported.
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