Although only about one person in ten with a positive skin test or blood assay ever develops. TB disease, the risk continues throughout the rest of your life. The symptoms of TB are. common to many other illnesses.
Marco Polo-Great Silk Road. For many centuries the Great Silk Road connected a complex network of trade routes from Europe with Asia. It was a way to establish contact with the great civilizations of China, India, the Near East and Europe.
Marco Polo was not really so much famous for his journey on the silk road to mongol-controlled china and met Kublai Khan (Which some scholars say didn't happen!), but for writ â¦ ing a book about his journeys. The Travels of Marco Polo is in many ways a fantasy.