At the age of 18, Mani-Leib had to flee Russia as a result of his participation in the 1905 Revolution. He settled in the United States, where he wrote original poems for the Jewish Daily Forward (Forverts) and other Yiddish periodicals. He is also the author of many children's books and songs, only one of which, "Yingl, Tsingl Khvat," has been translated into English.
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