Could you explain what you're referring to? Talking about a 'Jewish World' prior to the formation of Israel and after the Destruction of the Temple requires clarification. Jews held no sovereign power in that period outside of a few anomalies like the Khazars. Further, Jews largely followed their gentile cousins in abolition. For example, there were a small number of Jewish slaveowners who joined the Confederacy. There were also a fair number of Jews in abolitionist organizations.