Complex sentence: Singer contributed to the European Yiddish press from 1916; and in 1921, after Abe Cahan noticed his story "Pearls", Singer became a correspondent for the leading American Yiddish newspaper "The Forward".
Split into simpler sentences: Singer contributed to the European Yiddish press from 1916. In 1921, after Abe Cahan noticed his story "Pearls", Singer became a correspondent for the leading American Yiddish newspaper "The Forward".