Answer:
Great Schism of 1054
Explanation:
The church in 1054 split into Roman Catholic and Eastern Orthodox due to differences in religious and political beliefs that had been developing between the east (Eastern Orthodox) and the west (Roman Catholic).
Tsarina Alexandra's biggest mistake after she took over the leadership of the Russian government while her husband Nicholas II was on a battlefield was putting too much trust and confidence to Rasputin's decisions which regard to running the country. People of Russia no longer trust the royal family since then. Hope this answer helps.
