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.
He traveled farther than any of his predecessors during his 24-year journey along the Silk Road, reaching China and Mongolia, where he became a confidant of Kublai Khan. The story of his journey is told in Il Milione (The Million), commonly called The Travels of Marco Polo..