Some have lived in Israel for generations, but most have arrived (or are descended from those who arrived) from every part of the world since the modern Zionist movement began in the late 19th century.
About a quarter of them had lived in Israel for generations, while the rest came from elsewhere.
mnli hypothesis: About a quarter of them had lived in Israel for generations, while the rest came from elsewhere. premise: Some have lived in Israel for generations, but most have arrived (or are descended from those who arrived) from every part of the world since the modern Zionist movement began in the late 19th century.