Who created the international auxiliary language Esperanto?

L. L. Zamenhof created the international auxiliary language Esperanto.

Zamenhof, a Polish-Jewish ophthalmologist from Białystok, published the first Esperanto textbook in 1887 under the pseudonym “Doktoro Esperanto.” The name came from a pen name meaning “one who hopes,” and it eventually became the name of the language itself.

Zamenhof wanted a politically neutral language that could help people from different linguistic communities communicate. Esperanto uses a regular grammar, phonetic spelling, and a system of roots and affixes designed to make vocabulary easier to build and recognize.

The language developed an international community, literature, clubs, conventions, and translations, although it never replaced major national languages as its early advocates sometimes hoped. Zamenhof is sometimes called the language’s author or initiator rather than its sole inventor, because speakers and writers shaped Esperanto after its initial publication. Tolkien created fictional languages such as Quenya, not Esperanto.