I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Sevastopol fell after eleven months, and formerly neutral countries began to join the allied cause. Isolated and facing a bleak prospect of invasion from the west if the war continued, Russia sued for peace in March 1856. This was welcomed by France and the UK, where the citizens began to turn against their governments as the war dragged on. The war was officially ended by the Treaty of Paris, signed on 30 March 1856. Russia lost the war, and was forbidden from hosting warships in the Black Sea. The Ottoman vassal states of Wallachia and Moldavia became largely independent. Christians were granted a degree of official equality, and the Orthodox church regained control of the Christian churches in dispute.:415"?
A:
Christians were subject to the power of?