Complex sentence: He wrote in his memoirs that jobs were hard to come by for Jews; there were restrictions on where they could live and travel, they were required to wear a yellow badge, and available jobs went first to non-Jews.
Split into simpler sentences: He wrote in his memoirs that jobs were hard to come by for Jews. There were restrictions on where they could live and travel, they were required to wear a yellow badge, and anything available went first to non-Jews.