Answer:
the spread of Chinese culture throughout Asia and Africa.
Step-by-step explanation:
The sea voyages that was led by Zheng He established a trade routes that connect Asia with Africa.
Because of this trade route, more and more Chinese traders able to visit the African continent to sell their products. But they're not there just to do business. They also communicate and learn from one another. This is the reason why chinese' culture and tradition started to be adopted by the locals and cultural diffusion occurred between Chinese culture with theirs culture.