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 the first European to reach China (see Europeans in Medieval China), but he was the first to leave a detailed chronicle of his experience.This book inspired Christopher Columbus and many other travellers.n 1269, Niccolo niccolÃ² And maffeo returned to their families In, venice meeting Young marco for the first. Time in, 1271 during the rule Of Doge Lorenzo, Tiepolo Marco (polo at seventeen years of), age his, father and his uncle set off For asia on the series of adventures That marco later documented in his. book