The Mongol Empire had a devastating affect on Persia or modern day Iran. Today, Genghis Khan, the leader of the Mongol horde, is known as a genocidal warlord which killed millions of people there. A similar thing happened when the Mongols first invaded Russia as they slaughtered entire cities during their invasions; an example being the city of Kiev.
The Catholic church had more influence because of the location of the Vatican it is in the south so the priest would travel mostly around the south to spread the word of God.
