Ключевые слова: anniversary, background, banner, bulgaria, bulgarian, calligraphy, celebrate, celebration, commonwealth, congress, constitution, country, culture, democratic, election, europa, europe, festival, festive, fireworks, flag, freedom, great, happy, holiday, independence, independent, inscription, international, language, lettering, liberation, memorial, nation, national, party, patriot, patriotic, patriotism, postcard, poster, republic, revolution, sofia, southeast, traditional, unification, union, unity, vote,