Not nitpicking by any account, but BT, I think Bulgaria never gave the Slavs a religion or an alphabet... Byzantium did both. The Byzantine monks Cyrillos and Methodios created the Alphabet and spread Orthodoxy in Bulgaria and the rest of the Balkans, while other missionaries (and, most importantly, official arrangements and state deals - as in the case of the Rus) dealt with the rest of the Slavs.

Or was it just a figure of speach - the Bulgarians being the first Slavs to aquire alphabet and orthodoxy by the Byzantines? ~;