Complex sentence: Arthur Szyk became a renowned artist and book illustrator as early as the interwar period--his works were exhibited and published not only in Poland, but also in France, the United Kingdom, Israel and the United States.
Split into simpler sentences: Arthur Szyk became a renowned artist and book illustrator as early as the interwar period. His works were exhibited and published not only in Poland, but also in France, the United Kingdom, Israel and the United States.