Answer: The Tang and Song Dynasties of China provide a glimpse into ancient Chinese splendor and reveal Chinese advances in all aspects of human life. The Ming Empire undertook colossal building projects, such as the Great Wall, was top in technology, and made epic explorations. The Mongols were so successful because of their excellent horsemanship, lack of supply trains, superior battle tactics, use of fear, and Genghis Khan's intellect.
Explanation: Hope it helps :)
D is correct because he wanted a faster way to India and Asia for trade.
