Complex sentence: In 1923 Roth's first (unfinished) novel, "The Spider's Web", was serialized in an Austrian newspaper and he achieved moderate success as a writer throughout the 1920s with a series of novels documenting life in post-War Europe.
Split into simpler sentences: In 1923 Roth's first (unfinished) novel, "The Spider's Web", was serialized in an Austrian newspaper. He achieved moderate success as a writer throughout the 1920s with a series of novels exploring life in post-war Europe.