Let’s take the Rhine Which goes from Switzerland to Netherlands. When and how did people start agreeing on giving-it the same name ? What about the alps going from southern France to Austria ? When did people agreed that it was the same mountain range ? And obviously what about the Gulf of Mexico ?

  • BmeBenji@lemm.ee
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    12 hours ago

    Consider the Thames river. Which one? Depends on how you read it out loud.

    The “Temz” runs through London while the “Thayms” runs through somewhere in Connecticut.

  • nesc@lemmy.cafe
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    2 days ago

    They didn’t, a lot of shared places, or land features have different names in differsnt languages and different places. Agreements happen when something either didn’t have a name before, or when the name came from the past.

  • jol@discuss.tchncs.de
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    2 days ago

    Lookup the East Sea, aka Sea of Japan. Or the Tagus river, aka Tejo river. There’s plenty other examples I can’t remember now. People don’t always agree on what to call things that cross borders. Usually we just agree to disagree as there’s no point arguing.

  • Deestan@lemmy.world
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    2 days ago

    For the most part, whomever the mapmakers happened to ask got to decide. Once it’s on an official map, it’s just gonna drown out any other opinions.

    Several places in Norway have names that are spelled “wrong” according to locals, but changing it requires herculean efforts of bureaucracy.

  • Splount@lemmy.world
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    2 days ago

    I recognize that you are asking about European place named but how humans named things in North America might give some insight. A really great book on how places got their names in the US is Names on the Land: a historical account of place-naming in the United States by George R. Stewart (ISBN 978-1-59017-273-5).