Ключевые слова: accessibility, black, button, communication, communications, computer, concept, concepts, contemporary, country, data, design, ecommerce, education, electronic, enter, flag, freedom, global, ideas, internet, key, keyboard, keypad, language, laptop, learning, maryland, nation, national, network, online, online booking, outsourcing, patriot, patriotic, patriotism, pc, push, sign, state, surface, symbol, technology, touch, usa, vacation,