Ключевые слова: 3d, background, banner, blowing, blue, bulgaria, bulgarian, celebration, clouds, country, culture, day, emblem, europe, evening, fabric, flag, flagpole, flagstaff, flutters, flying, freedom, government, holiday, independence, nation, national, nationality, patriotic, patriotism, pole, realistic, render, rendering, seamless, sign, silk, sky, sofia, state, sunset, symbol, symbolic, textile, texture, travel, wave, waving, wind,