The Perils Of Privatisation - Part X
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No best answer has yet been selected by notinkansas. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Esperanto was first publicised in the 1880s rather than the 1980s. I can't think of an artificial or constructed language - which is what these things are normally called - as late as the dates you offer.
There have been lots of them - such as Ido and Volapuk - over the years apart fron Esperanto and none of them has "taken off".
Click http://en.wikipedia.org/wiki/Artificial_language for a web-page with more details. Once there, you can click on each of the blue-coloured headings to find out more about the various attempts to produce a universal language.