About 115 countries, most widely in central and eastern Europe; east Asia: China and other countries; areas of South America; southwest Asia.
SVO, OVS; prepositions; genitives, relatives after noun heads; articles, adjectives, numerals before noun heads; question word initial; accusative -n; affixes mark tense; passive with esti + passive participle; causative -ig; comparative word; nontonal
2,000,000 L2 speakers (Wiesenfeld 1999). All ages.
Developed 1872–1885 by L. L. Zamenhof of Warsaw, Poland, for intercommunication among L1 speakers of other languages.