Approximately 900,000 Jews migrated, fled, or were expelled from Muslim-majority countries throughout Africa and Asia in the 20th century, primarily as a consequence of the establishment of the State of Israel. Large-scale migrations were also organized, sponsored, and facilitated by Zionist organizations such as Mossad LeAliyah Bet, the Jewish Agency, and the Hebrew Immigrant Aid Society. The mass movement mainly transpired from 1948 to the early 1970s, with one final exodus of Iranian Jews occurring shortly after the Islamic Revolution in 1979–1980. An estimated 650,000 (72%) of these Jews resettled in Israel.