László Polgár
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László Polgár is a Hungarian chess teacher and educational psychologist. He is the father of the famous Polgár sisters: Zsuzsa, Zsófia, and Judit, whom he raised to be chess prodigies, with Judit and
Polgár in 2016
Judit, Zsuzsa, Zsófia and László Polgár
Esperanto
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Esperanto is the world's most widely spoken constructed auxiliary language. Created by L. L. Zamenhof in 1887 as 'the International Language', it is intended to be a universal second language for inte
László Polgár
…moved to Hungary to be with him. They had three daughters together, Susan, Sofia, and Judit, whom Polgár home-schooled, primarily in chess but also in Esperanto, German, Russian, English, and high-level math. Polgár and his wife considered various possible subjects in which to drill their children, "including…
Zamenhof, c. 1895
7th Esperanto congress, Antwerp, August 1911
The Republic of Rose Island in the Adriatic Sea used Esperanto as its official language in 1968; it has since been demolished
Esperanto books at the World Esperanto Congress, Rotterdam 2008