A Union Pacific railroad station. Aziz Shamuratov /iStock Editorial via Getty Images The United States of America is arguably still in its infancy as a nation. For an idea of the novelty of the U.S., Egypt's roots as a country date back to 6,000 BC - - more than 8,000 years. The nation of India goes back to 3,300 BC - - over 5,000 years. In a relatively short time, the amazing innovation of the U.S. has allowed it to economically dominate the global economic landscape. The nation's projected $28.8 trillion ...