Ключевые слова: aviation, background, business, citizen, citizenship, country, culture, customs, destination, direction, document, europe, european, exploration, flying, geography, german, germany, global, holiday, id, identification, identity, immigration, international, isolated, journey, legal, map, money, nation, national, navigation, official, paper, pass, passport, red, security, symbol, tourism, travel, trip, vacation, visa, white, world,