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L. L. Zamenhof (pictured) published Unua Libro, the first publication to describe Esperanto, a constructed international language.
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L. L. Zamenhof
Creator of Esperanto (1859–1917)
L. L. Zamenhof was the creator of Esperanto, the most widely used constructed international auxiliary language.Source: Wikipedia (CC BY-SA)
Unua Libro
1887 book by L. L. Zamenhof about Esperanto
Dr. Esperanto's International Language, commonly referred to as Unua Libro, is an 1887 book by Polish ophthalmologist L. L. Zamenhof, in which he first introduced and described the constructed language Esperanto. First published in Russian on July 26 [O.S. July 14] 1887, the…Source: Wikipedia (CC BY-SA)
Esperanto
International auxiliary language
Esperanto is the world's most widely spoken constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language', it is intended to be a universal second language for international communication. He described the language in Dr.…Source: Wikipedia (CC BY-SA)
Constructed language
Language that is intentionally devised; not emergent from human interaction
A constructed language is a language for communication between humans but unlike a language that emerges from human interaction, is intentionally devised for a particular purpose. Constructed language is often shortened to conlang and is a relatively broad term that encompasses…Source: Wikipedia (CC BY-SA)