Really? You're Bulgarian, right?
What role did your church play?
(I know practically nothing about
Bulgaria, btw.)
Sorry for the kinda late response. Now, a brief lecture of Bulgarian history will ensue upon the unsuspecting members of CFC. Bear with me..
In the year 1396, the last fortress of Bulgaria, and to be fair, most of the Balkans alongside it, fell. It was the end of Second Bulgarian Kingdom (not Empire. whoever labels every single pre-Renaissance or whatever state with "empire" is a bad and evil man). Also, the end of cultural life. Thousands of books, icons and other works of art have been lost/are presumed lost.
However, without the church and the monasteries, the amount of works lost would be infinitely much larger, to the point where we wouldn't know any Bulgarian sources for events that happened to other states (mostly battles with Byzantium/contacts/etc etc), and we would know history only from foreigners (not useful for fostering national identify, you see). Plus, there's many non-historical works that are amazing and enlightening. For the most part, church works about saints and other holy things. Might not be suited for modern audience.
Besides preservation of works of arts, the church had a role in educating to a very basic level, i.e writing and reading. This, of course had the tremendous effect of saving the Bulgarian language and people from slowly being assimilated into obedient Turkish servants.
And somewhere in St. Aton, in Anno Domini 1762, a certain monk called Paisius, in the
Hilendarski monastery, created the first history of Bulgarians chronicling the Medieval era of our country. Per se, it's not a completely historical works as we know them, as it has many historical mistakes, but it started one of the greatest events - the Bulgarian Enlightenment, in a manner of speaking.
tl;dr: the Bulgarian Orthodox Church, through it's churches and monasteries, it saved caches of books from the past, it saved the Bulgarian identify, and it created conditions for the Bulgarian National Revival.
Hopefully, this wall of text is read, or at least the tl;dr version of it. Also even more hopefully, this hasn't bored you.