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's Account of Dinosaurs. Marco Polo was a trader and explorer who spent over 20 years traveling through out Asia, Persia, China, and Indonesia. It was his journey which ultimately inspired other men like Christopher Columbus to explore the world.His travels took place from around 1271-1298.arco Polo was a trader and explorer who spent over 20 years traveling through out Asia, Persia, China, and Indonesia. It was his journey which ultimately inspired other men like Christopher Columbus to explore the world.