Bulgaria adopts euro as 21st single currency member. Georgi Angelov emphasizes euro decision-making integration. Bulgaria pegged currency to German mark and euro historically. SMEs save 500M euros in exchange fees. Tourism sector (8% GDP) benefits from euro adoption. ECB president Christine Lagarde highlights economic gains. Consumers warn of inflation-driven price hikes. Protests by far-right and pro-Russia groups over euro shift. November food prices rose 10% according to National Statistical Institute. Angelov warns stability needs 1-2 years for benefits. Political uncertainty risks delaying anti-corruption reforms. Bulgarian Parliament passed price-hike oversight bodies