Ключевые слова: america, background, border, business, card, citizenship, concept, country, custom, departure, destination, document, emigrant, emigrate, emigration, europe, european, foreign, holiday, identity, immigrant, immigration, information, international, journey, legal, migration, national, official, opportunity, paper, passport, problem, refugee, security, sign, state, suitcase, symbol, text, tourism, transport, travel, traveler, vacation, view, visa, walk, word, work,