Ключевые слова: american, american currency concept, american economy, banking, banking and finance, banking system, banknotes, cash, cash money, currency, currency concept, currency exchange, dollar bills, dollars, economic growth, economy, exchange, federal reserve, finance, financial, financial market, legal tender, money, savings, transaction, united states, united states financial, us currency, us currency exchange, us currency exchange rates, us dollar bills, us dollars, usd, wealth,