Esperanto is the most widely used constructed international auxiliary language, established by L. L. Zamenhof in 1887 to encourage global peace and communication. Its linguistic structure features a regular grammar, an agglutinative morphology, and a vocabulary primarily rooted in Romance and Germanic languages. Despite historical official repression by various regimes in the 20th century, the language has maintained a persistent global community of several hundred thousand speakers, including a small number of native users. Today, the movement is supported by international organizations and has seen a resurgence through digital platforms like Duolingo and Wikipedia. Its cultural heritage includes a vast body of original literature, music, and films, reflecting its ongoing role as a neutral medium for intercultural exchange.