Bulgaria and the euro a stable ERM-II member for a minimum of two years. While Bulgaria has not formally joined the exchange rate mechanism, the ±15% floating band permitted within ERM II is less restrictive than Bulgaria's current strict peg of 1.95583 BGN to 1 EUR. The lev has been pegged to the euro since its launch, and prior to that was pegged on par to the German Mark. While the currency board which pegs Bulgaria to the euro has been seen as beneficial to the country fulfilling criteria so quickly, the ECB has pressured Bulgaria to drop it as it did not know
Boris I of Bulgaria with what is now known as Old Church Slavonic, which in Bulgaria is called and known as Old Bulgarian, as an official language of the Church and the state. He is regarded as a saint in the Orthodox Church, as the Prince and baptizer of Bulgaria, and as Equal-to-the-Apostles, with his feast day observed on May 2. The name Boris is of Bulgar Turkic origin. After his official act of conversion to Christianity, Boris adopted the Christian name Michael. He is sometimes called Boris-Michael in historical research. The only direct evidence of Boris's title are his seals and the inscription