question: What resulted in effective and long-term isolation of Jewish communities ?
answer: An array of Jewish communities was established by Jewish settlers in various places around the Old World , often at great distances from one another
turker_answer: An array of Jewish communities was established by Jewish settlers in various places around the Old World , often at great distances from one another resulted in effective and long-term isolation of Jewish communities .
rule-based: An array of Jewish communities was established by Jewish settlers in various places around the Old World , often at great distances from one another resulted in effective and long-term isolation of Jewish communities .