The overall purpose of the conferences at Casablanca (January 1943), Tehran (November 1943), Yalta (February 1945) and Potsdam (July 1945) was to plan the Allied victory against Axis forces. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.
Answer:
They adopted bureaucratic measures
Explanation:
The overarching feature of all three Islamic empires was the ethnic and religious diversity of the subject populations.
The rulers of the Ottoman, Safavid, and Mughal states take to maintain harmony among the different ethnic and religious communities was however achieved as result of the bureaucratic measures adopted which had some form of strict rules and guidelines to protect the interest of the population and avoid any form of violence.