A possible reason was the attacks on them by crusaders and mongols around the 11th and 12th centuries. Another reason could have been the Arab rulers removing taxes from non Muslims and doing other things that hurt there income.
90% is the percent of Jews.
The correct answer for 1 should be C. Capitalism, because it is based on having private property and owning your own company
The correct answer for 2 should be c. The U.S. avoided economic and political alliances because that's what isolationism in politics is about.