Answer:
This is the Grand Canal that served to bring water from the south to the north of China. It served agriculture, navigation and trade purposes. The Great Wall runs from east to west in northern China. And the yellow line does not correspond to the course of either the Yangtze or the Huang He rivers.
Explanation:
Reconstruction in the south. The north had factories and the south had to buy supplies from the north so the south could reconstruct.
Fresco painting, method of painting water-based pigments on freshly applied plaster, usually on wall surfaces
It's because his missionaries carried his teachings on along the trade routes.