The transcontinential railroad brought more money to the railroad companies because more people had access to the railroads, therefor using them more, and money was brought in. Not 100% sure, but that is my guess
If a country export a greater value than imports, it has a trade surplus or positive trade balance, and conversely, if a country imports a greater value than export, it has a trade deficit or negative trade balance
<span>The correct answer is D. The Shang Dynasty. This was a Chinese dynasty and China has historically been famous for paper productio nwhere they left written records, but also for wall building like the Great Wall of China. The yellow river is actually The Yangtze River which is the third longest river in the world. </span>
