Answer:
The emperors instituted a policy of isolationism, which limited trade and outside influence.
Step-by-step explanation:
The Ming Dynasty in China existed between 1368 to 1644 AD. It was widely popular for its trading activities across the world. Reaching as far as the West.
However, the diffusion of ideas and knowledge decrease during the Ming Dynasty resulted from the fact that the emperors instituted a policy of isolationism, which limited trade and outside influence.
This was evident in the prolonged disagreement between Zheng He and the Confucian scholars in the fifteenth century. Thereby resulting in the isolation policy. This limits trade and outside influence.