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.
Venetian explorer and writer. The traveler and writer Marco Polo left Venice for Cathay (now China) in 1271, spent seventeen years in Kublai Khan's (1215 â 1294) empire, and returned to Venice in 1295.His account of his experiences is one of the most important travel documents ever written.olo, Marco (c. 1254â1324) Venetian traveller. In 1271, he accompanied his father and uncle on a trading mission along the Silk Road, arrving at the court of Kublai Khan, the Mongol Emperor of China, in c. 1275.