Original sentence: Immigration to Israel from Arab lands is the mostly forced migration in modern times by the Sephardi Jews primarily, who lived in Arab lands since well before the advent and spread of Islam and who subsequently moved to the modern State of Israel
Edited sentence: Immigration to Israel from Arab lands is the mostly forced migration in modern times by the mostly Sephardi Jews that lived in Arab lands since well before the advent and spread of Islam and who subsequently moved to the modern State of Israel