Example image of eyePlorer eyePlorer map for 'International auxiliary language': First language Language Second language English language French language Constructed language Esperanto Ido Interlingua International English Universal language Philosophical language François Sudre Solresol Johann Martin Schleyer Volapük World Congress of Esperanto Hardest language History of Esperanto L. L. Zamenhof International Association of Academies Louis Couturat Edgar de Wahl Occidental language Alice Vanderbilt Morris International Auxiliary Language Association Alexander Gode André Martinet History of Interlingua Artistic language Engineered language Lingua Franca Nova Mondlango Toki Pona Morpheme Oligosynthetic language Compound (linguistics) Sona language Ro (language) Pasigraphy Loglan Lojban International scientific vocabulary Glosa Phonotactics Novial Basic English Special English Inter-Parliamentary Union United Nations
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