Abstract: Esperanto, a constructed international auxiliary language, designed with simple grammar, phonetic spelling, and a vocabulary drawn from major European languages. It aimed to eliminate linguistic barriers and promote cultural neutrality. Initially, the language gained significant attraction, attracting a dedicated community of speakers and support from intellectuals, pacifists, and progressive movements. The early 20th century marked with Esperanto's peak. However, its growth faced challenges. Factors including political suppression, the lack of institutional support from global entities and the rise of English marginalized Esperanto's globalisation.

    This paper explores the historical journey of Esperanto, examining the sociopolitical factors behind its rise and decline, and evaluates its legacy as a symbol of global linguistic equality and international adaptation.

Keywords – Esperanto, Language, Auxiliary, Simple Grammar, Phonetic Spelling, European, Linguistic Barriers, Cultural Neutrality, Dedicated Community, Intellectuals, Century, Peak, Suppression, Global Entities, Rise of English, Marginalization, Globalization, Sociopolitical Factors, Rise And Decline, Legacy, Linguistic Equality.