Which descriptions of the Ottoman Empire are accurate? Multiple Choice question

Choose all answers that are correct.


A: included territory that is now part of Turkey, Greece, and Egypt at its height


B: expanded through Africa and Asia but could not successfully invade Europe


C: experienced frequent conflict with Safavid Shi'ites as Sunni Muslims


D: had a brief moment of glory before being conquered by Mongols


E: founded by Osman in the thirteenth century